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Hummelen, Prof. Kees

Kees Hummelen
Kees Hummelen

Kees Hummelen is professor of Chemistry of Molecular Organic and Bio-organic Materials at the University of Groningen. Together with his staff he is involved in the creation of plastic solar panels. Plastic is significantly cheaper than the resources that are normally used for the production of solar cells. However, the returns are not yet high enough for plastic to be able to compete. The reducing agent Hummelen is using is a special type of polymer, a so-called conjugated polymer, which is coloured and can therefore absorb more light and conduct better. Polymers are long molecules with complex structures. The other substance used, the electron acceptor, is a buckyball, a molecule shaped like a football which consists of sixty carbon atoms. Hummelen is also scientific director of Solenne BV in Groningen.

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Publications

2019

Ye, G., Doumon, N. Y., Rousseva, S., Liu, Y., Abdu-Aguye, M., Loi, M. A., ... Chiechi, R. C. (2019). Conjugated Polyions Enable Organic Photovoltaics Processed from Green Solvents. ACS Applied Energy Materials, 2(3), 2197-2204. https://doi.org/10.1021/acsaem.8b02226

2018

Liu, J., Qiu, L., Portale, G., Torabi, S., Stuart, M. C. A., Qiu, X., ... Koster, L. J. A. (2018). Side-chain effects on N-type organic thermoelectrics: A case study of fullerene derivatives. Nano energy, 52, 183-191. https://doi.org/10.1016/j.nanoen.2018.07.056
Douvogianni, E., Qiu, X., Qiu, L., Jahani, F., Kooistra, F. B., Hummelen, J. C., & Chiechi, R. C. (2018). Soft Nondamaging Contacts Formed from Eutectic Ga-In for the Accurate Determination of Dielectric Constants of Organic Materials. Chemistry of Materials, 30(16), 5527-5533. https://doi.org/10.1021/acs.chemmater.8b02212
Nieuwendaal, R. C., DeLongchamp, D. M., Richter, L. J., Snyder, C. R., Jones, R. L., Engmann, S., ... Hummelen, J. C. (2018). Characterization of Interfacial Structure in Polymer-Fullerene Bulk Heterojunctions via C-13 {H-2} Rotational Echo Double Resonance NMR. Physical Review Letters, 121(2), [026101]. https://doi.org/10.1103/PhysRevLett.121.026101
Liu, J., Qiu, L., Alessandri, R., Qiu, X., Portale, G., Dong, J., ... Koster, L. J. A. (2018). Enhancing Molecular n-Type Doping of Donor-Acceptor Copolymers by Tailoring Side Chains. Advanced materials, 30(7), [1704630]. https://doi.org/10.1002/adma.201704630
Brebels, J., Douvogianni, E., Devisscher, D., Eachambadi, R. T., Manca, J., Lutsen, L., ... Maes, W. (2018). An effective strategy to enhance the dielectric constant of organic semiconductors - CPDTTPD-based low bandgap polymers bearing oligo(ethylene glycol) side chains. Journal of Materials Chemistry C, 6(3), 500-511. https://doi.org/10.1039/c7tc05264b

2017

Shao, S., Liu, J., Fang, H-H., Qiu, L., ten Brink, G. H., Hummelen, J. C., ... Loi, M. A. (2017). Efficient Perovskite Solar Cells over a Broad Temperature Window: The Role of the Charge Carrier Extraction. Advanced Energy Materials, 7(22), [1701305]. https://doi.org/10.1002/aenm.201701305
Qiu, L., Liu, J., Alessandri, R., Qiu, X., Koopmans, M., Havenith, R. W. A., ... Hummelen, J. C. (2017). Enhancing doping efficiency by improving host-dopant miscibility for fullerene-based n-type thermoelectrics. Journal of Materials Chemistry A, 5(40), 21234-21241. https://doi.org/10.1039/c7ta06609k
Liu, J., Qiu, L., Portale, G., Koopmans, M., Ten Brink, G., Hummelen, J. C., & Koster, L. J. A. (2017). N-Type Organic Thermoelectrics: Improved Power Factor by Tailoring Host-Dopant Miscibility. Advanced materials, 29(36), [1701641]. https://doi.org/10.1002/adma.201701641
Torabi, S., Cherry, M., Duijnstee, E. A., Le Corre, V. M., Qiu, L., Hummelen, J. C., ... Koster, L. J. A. (2017). Rough Electrode Creates Excess Capacitance in Thin-Film Capacitors. ACS Applied Materials and Interfaces, 9(32), 27290-27297. https://doi.org/10.1021/acsami.7b06451
Groeneveld, B. G. H. M., Najafi, M., Steensma, B., Adjokatse, S., Fang, H-H., Jahani, F., ... Loi, M. A. (2017). Improved efficiency of NiOx-based p-i-n perovskite solar cells by using PTEG-1 as electron transport layer. APL Materials, 5(7), [076103]. https://doi.org/10.1063/1.4992783
Zhou, D., Doumon, N. Y., Abdu-Aguye, M., Bartesaghi, D., Loi, M. A., Koster, L. J. A., ... Hummelen, J. C. (2017). High-quality conjugated polymers via one-pot Suzuki-Miyaura homopolymerization. RSC Advances, 7(44), 27762-27769. https://doi.org/10.1039/c7ra03539j

2016

Qiu, L., Zhang, Y., Krijger, T., Qiu, X., van 't Hof, P., Hummelen, J., & Chiechi, R. (2016). Rectification of Current Responds to Incorporation of Fullerenes into Mixed-Monolayers of Alkanethiolates in Tunneling Junctions. Chemical Science. https://doi.org/10.1039/C6SC04799H
Koole, M., Hummelen, J. C., & van der Zant, H. S. J. (2016). Spin excitations in an all-organic double quantum dot molecule. Physical Review B, 94(16), [165414]. https://doi.org/10.1103/PhysRevB.94.165414
Torabi, S., Liu, J., Gordiichuk, P., Herrmann, A., Qiu, L., Jahani, F., ... Koster, L. J. A. (2016). Deposition of LiF onto Films of Fullerene Derivatives Leads to Bulk Doping. ACS Applied Materials & Interfaces, 8(34), 22623-22628. https://doi.org/10.1021/acsami.6b05638
de Gier, H. D., Jahani , F., Broer, R., Hummelen, J. C., & Havenith, R. W. A. (2016). Promising Strategy To Improve Charge Separation in Organic Photovoltaics: Installing Permanent Dipoles in PCBM Analogues. The Journal of Physical Chemistry. A: Molecules, Spectroscopy, Kinetics, Environment, & General Theory, 120(27), 4664-4671. https://doi.org/10.1021/acs.jpca.5b09279
Shao, S., Abdu-Aguye, M., Qiu, L., Lai, L-H., Liu, J., Adjokatse, S., ... Loi, M. A. (2016). Elimination of the light soaking effect and performance enhancement in perovskite solar cells using a fullerene derivative. Energy & Environmental Science, 9(7), 2444-2452. https://doi.org/10.1039/c6ee01337f

2015

Koole, M., Thijssen, J. M., Valkenier, H., Hummelen, J. C., & van der Zant, H. S. J. (2015). Electric-Field Control of Interfering Transport Pathways in a Single-Molecule Anthraquinone Transistor. Nano Letters, 15(8), 5569-5573. https://doi.org/10.1021/acs.nanolett.5b02188
Savagatrup, S., Rodriquez, D., Printz, A. D., Sieval, A. B., Hummelen, J. C., & Lipomi, D. J. (2015). [70]PCBM and Incompletely Separated Grades of Methanofullerenes Produce Bulk Heterojunctions with Increased Robustness for Ultra-Flexible and Stretchable Electronics. Chemistry of Materials, 27(11), 3902-3911. https://doi.org/10.1021/acs.chemmater.5b00638
Torabi, S., Jahani, F., Van Severen, I., Kanimozhi, C., Patil, S., Havenith, R. W. A., ... Koster, L. J. A. (2015). Strategy for Enhancing the Dielectric Constant of Organic Semiconductors Without Sacrificing Charge Carrier Mobility and Solubility. Advanced Functional Materials, 25(1), 150-157. https://doi.org/10.1002/adfm.201402244
Sieval, A. B., Treat, N. D., Rozema, D., Hummelen, J. C., & Stingelin, N. (2015). Diels-Alders adducts of C-60 and esters of 3-(1-indenyl)-propionic acid: alternatives for [60]PCBM in polymer:fullerene solar cells. Chemical Communications, 51(38), 8126-8129. https://doi.org/10.1039/c5cc01642h

2014

Perrin, M. L., Frisenda, R., Koole, M., Seldenthuis, J. S., Gil, J. A. C., Valkenier , H., ... van der Zant, H. S. J. (2014). Large negative differential conductance in single-molecule break junctions. Nature Nanotechnology, 9(10), 830-834. https://doi.org/10.1038/NNANO.2014.177
Jahani, F., Torabi, S., Chiechi, R. C., Koster, L. J. A., & Hummelen, J. C. (2014). Fullerene derivatives with increased dielectric constants. Chemical communications (Cambridge, England), 50(73), 10645-10647. https://doi.org/10.1039/c4cc04366a
Valkenier, H., Guedon, C. M., Markussen, T., Thygesen, K. S., van der Molen, S. J., & Hummelen, J. C. (2014). Cross-conjugation and quantum interference: a general correlation? Physical Chemistry Chemical Physics, 16(2), 653-662. https://doi.org/10.1039/c3cp53866d

2013

Loi, M. A., & Hummelen, J. C. (2013). Hybrid solar cells: Perovskites under the Sun. Nature Materials, 12(12), 1087-1089. https://doi.org/10.1038/nmat3815
Frisenda, R., Perrin, M. L., Valkenier, H., Hummelen, J. C., & Zant, H. S. J. V. D. (2013). Statistical analysis of single-molecule breaking traces. Physica Status Solidi B, 250(11), 2431-2436. https://doi.org/10.1002/pssb.201349236
Serbenta, A., Pavelyev, V. G., Hummelen, J. C., Loosdrecht, P. H. M. V., & Pshenichnikov, M. S. (2013). Exciton and Hole-Transfer Dynamics in Polymer: Fullerene Blends. In M. Chergui, S. Cundiff, A. Taylor, R. D. Vivie-Riedle, & K. Yamanouchi (Eds.), Proceedings of the XVIIIth International Conference on Ultrafast Phenomena (41 ed., Vol. 41, pp. 04012-p.1-04012-p.3). University of Groningen, Stratingh Institute for Chemistry.
Chiechi, R. C., Havenith, R. W. A., Hummelen, J. C., Koster, L. J. A., & Loi, M. A. (2013). Modern plastic solar cells: materials, mechanisms and modeling. Materials Today, 16(7-8), 281-289. https://doi.org/10.1016/j.mattod.2013.07.003
Nuzzo, D. D., Wetzelaer, G-J. A. H., Bouwer, R. K. M., Gevaerts, V. S., Meskers, S. C. J., Hummelen, J. C., ... Janssen, R. A. J. (2013). Simultaneous Open-Circuit Voltage Enhancement and Short-Circuit Current Loss in Polymer: Fullerene Solar Cells Correlated by Reduced Quantum Efficiency for Photoinduced Electron Transfer. Advanced Energy Materials, 3(1), 85-94. https://doi.org/10.1002/aenm.201200426

2012

Koster, L. J. A., Shaheen, S. E., & Hummelen, J. C. (2012). Pathways to a New Efficiency Regime for Organic Solar Cells. Advanced Energy Materials, 2(10), 1246-1253. https://doi.org/10.1002/aenm.201200103
Chiechi, R. C., & Hummelen, J. C. (2012). Polymer Electronics, Quo Vadis? Acs Macro Letters, 1(10), 1180-1183. https://doi.org/10.1021/mz3004133
Zou, W., Visser, C., Maduro, J. A., Pshenichnikov, M. S., & Hummelen, J. C. (2012). Broadband dye-sensitized upconversion of near-infrared light. Nature Photonics, 6(8), 560-564. https://doi.org/10.1038/nphoton.2012.158
Guedon, C. M., Valkenier, H., Markussen, T., Thygesen, K. S., Hummelen, J. C., & van der Molen, S. J. (2012). Observation of quantum interference in molecular charge transport. Nature Nanotechnology, 7(5), 304-308. https://doi.org/10.1038/NNANO.2012.37
Kaliginedi, V., Moreno-Garcia, P., Valkenier -van Dijk, H., Hong, W., Garcia-Suarez, V. M., Buiter, P., ... Wandlowski, T. (2012). Correlations between Molecular Structure and Single-Junction Conductance: A Case Study with Oligo(phenylene-ethynylene)-Type Wires. Journal of the American Chemical Society, 134(11), 5262-5275. https://doi.org/10.1021/ja211555x
Bouwer, R. K. M., Wetzelaer, G-J. A. H., Blom, P. W. M., & Hummelen, J. C. (2012). Influence of the isomeric composition of the acceptor on the performance of organic bulk heterojunction P3HT: bis-PCBM solar cells. Journal of Materials Chemistry, 22(30), 15412-15417. https://doi.org/10.1039/c2jm32993j

2011

Hong, W., Valkenier, H., Meszaros, G., Manrique, D. Z., Mishchenko, A., Putz, A., ... Wandlowski, T. (2011). An MCBJ case study: The influence of π-conjugation on the single-molecule conductance at a solid/liquid interface. Beilstein Journal of Nanotechnology, 2(1), 699-713. https://doi.org/10.3762/bjnano.2.76
Ball, J. M., Bouwer, R. K. M., Kooistra, F. B., Frost, J. M., Qi, Y., Buchaca Domingo, E., ... Anthopoulos, T. D. (2011). Soluble fullerene derivatives: The effect of electronic structure on transistor performance and air stability. Journal of Applied Physics, 110(1), 014506-1-014506-9. [014506]. https://doi.org/10.1063/1.3605531
Fracasso, D., Valkenier, H., Hummelen, J. C., Solomon, G. C., Chiechi, R. C., Hong, W., ... Wandlowski, T. (2011). Evidence for quantum interference in sams of arylethynylene thiolates in tunneling junctions with eutectic Ga-In (EGaIn) top-contacts: The influence of π-conjugation on the single-molecule conductance at a solid/liquid interface. Journal of the American Chemical Society, 133(24), 9556-9563. https://doi.org/10.1021/ja202471m
Valkenier, H., Huisman, E. H., Hal, P. A. V., de Leeuw, D., Chiechi, R. C., & Hummelen, J. C. (2011). Formation of high-quality self-assembled monolayers of conjugated dithiols on gold: Base matters. Journal of the American Chemical Society, 133(13), 4930-4939. https://doi.org/10.1021/ja110358t
Guedon, C. M., Zonneveld, J., Valkenier, H., Hummelen, J. C., & van der Molen, S. J. (2011). Controlling the interparticle distance in a 2D molecule-nanoparticle network. Nanotechnology, 22(12), 125205-1-125205-5. [125205]. https://doi.org/10.1088/0957-4484/22/12/125205
Brouwer, F., Alma, J., Valkenier, H., Voortman, T. P., Hillebrand, J., Chiechi, R. C., & Hummelen, J. C. (2011). Using bis(pinacolato)diboron to improve the quality of regioregular conjugated co-polymers. Journal of Materials Chemistry, 21(5), 1582-1592. https://doi.org/10.1039/c0jm02359k

2010

Maddalena, F., Kuiper, M. J., Poolman, B., Brouwer, F., Hummelen, J. C., de Leeuw, D. M., ... Blom, P. W. M. (2010). Organic field-effect transistor-based biosensors functionalized with protein receptors. Journal of Applied Physics, 108(12), 124501-1-124501-4. [124501]. https://doi.org/10.1063/1.3518681
Karsten, B. P., Bouwer, R. K. M., Hummelen, J. C., Williams, R. M., & Janssen, R. A. J. (2010). Charge Separation and Recombination in Small Band Gap Oligomer-Fullerene Triads. Journal of Physical Chemistry B, 114(45), 14149-14156. https://doi.org/10.1021/jp906973d
Bakulin, A. A., Hummelen, J. C., Pshenichnikov, M. S., & Loosdrecht, P. H. M. V. (2010). Ultrafast Hole-Transfer Dynamics in Polymer/PCBM Bulk Heterojunctions. Advanced Functional Materials, 20(10), 1653-1660. https://doi.org/10.1002/adfm.200902099
Koeber, S., Prauzner, J., Salvador, M., Kooistra, F. B., Hummelen, J. C., & Meerholz, K. (2010). 1064-nm Sensitive Organic Photorefractive Composites. Advanced materials, 22(12), 1383-+. https://doi.org/10.1002/adma.200903005
Karsten, B. P., Bouwer, R. K. M., Hummelen, J. C., Williams, R. M., & Janssen, R. A. J. (2010). Charge separation and (triplet) recombination in diketopyrrolopyrrole-fullerene triads. Photochemical & Photobiological Sciences, 9(7), 1055-1065. https://doi.org/10.1039/c0pp00098a
Kuhlmann, J-C., Bruyn, P. D., Bouwer, R. K. M., Meetsma, A., Blom, P. W. M., & Hummelen, J. C. (2010). Improving the compatibility of fullerene acceptors with fluorene-containing donor-polymers in organic photovoltaic devices. Chemical Communications, 46(38), 7232-7234. https://doi.org/10.1039/c0cc01347a
Koeber, S., Gallego-Gomez, F., Salvador, M., Kooistra, F. B., Hummelen, J. C., Aleman, K., ... Meerholz, K. (2010). Influence of the sensitizer reduction potential on the sensitivity of photorefractive polymer composites. Journal of Materials Chemistry, 20(29), 6170-6175. https://doi.org/10.1039/c0jm01208d
Hummelen, J. C. (2010). Kunststoff-Solarzellen. Praxis der Naturwissenschaften, 59(2), 31-34.
Szendrei, K., Jarzab, D., Yarema, M., Sytnyk, M., Pichler, S., Hummelen, J. C., ... Loi, M. A. (2010). Surface modification of semiconductor nanocrystals by a methanofullerene carboxylic acid. Journal of Materials Chemistry, 20(39), 8470-8473. https://doi.org/10.1039/c0jm02347g
Bouwer, R. K. M., & Hummelen, J. C. (2010). The Use of Tethered Addends to Decrease the Number of Isomers of Bisadduct Analogues of PCBM. Chemistry, 16(37), 11250-11253. https://doi.org/10.1002/chem.201000537
Kooistra, F. B., Leuning, T. M., Martinez, E. M., & Hummelen, J. C. (2010). Two new types of pi-conjugation between a fullerene sphere and an addend. Chemical Communications, 46(12), 2097-2099. https://doi.org/10.1039/b920339g
Bakulin, A. A., Hummelen, J. C., Loosdrecht, P. H. V., & Pshenichnikov, M. S. (2010). 30-fs Hole-Transfer Dynamics in Polymer/PCBM Bulk Heterojunction. In Conference Paper of the International Conference on Ultrafast Phenomena (UP) (pp. TuE47-TuE47). The Optical Society of America.

2009

Jarzab, D., Cordella, F., Lenes, M., Kooistra, F. B., Blom, P. W. M., Hummelen, J. C., & Loi, M. A. (2009). Charge Transfer Dynamics in Polymer-Fullerene Blends for Efficient Solar Cells. Journal of Physical Chemistry B, 113(52), 16513-16517. https://doi.org/10.1021/jp907840z
Ball, J. M., Wöbkenberg, P. H., Kooistra, F. B., Hummelen, J. C., Leeuw, D. M. D., Bradley, D. D. C., & Anthopoulos, T. D. (2009). Complementary circuits based on solution processed low-voltage organic field-effect transistors. Synthetic Metals, 159(21-22), 2368-2370. https://doi.org/10.1016/j.synthmet.2009.08.019
Lenes, M., Shelton, S., Sieval, A., Kronholm, D. F., Hummelen, J. C. K., & Blom, P. W. M. (2009). Electron trapping in higher adduct fullerene-based solar cells. Advanced Functional Materials, 19(18), 3002-3007. https://doi.org/10.1002/adfm.200900459
Mikhnenko, O. V., Cordella, F., Sieval, A. B., Hummelen, J. C., Blom, P. W. M., & Loi, M. A. (2009). Exciton Quenching Close to Polymer-Vacuum Interface of Spin-Coated Films of Poly(p-phenylenevinylene) Derivative. Journal of Physical Chemistry B, 113(27), 9104-9109. https://doi.org/10.1021/jp9012637
Zoombelt, A. P., Fonrodona, M., Wienk, M. M., Sieval, A. B., Hummelen, J. C., & Janssen, R. A. J. (2009). Photovoltaic performance of an ultrasmall band gap polymer. Organic letters, 11(4), 903-906. https://doi.org/10.1021/ol802839z
Kronholm, D. F., & Hummelen, J. C. (2009). Fullerene-Based Acceptor Materials. In C. Brabec, V. Dyakonov, & U. Scherf (Eds.), Organic Photovoltaics (pp. 153-178). Weinheim, Germany.

2008

Lenes, M., Kooistra, F. B., Hummelen, J. C., Severen, I. V., Lutsen, L., Vanderzande, D., ... Blom, P. W. M. (2008). Charge dissociation in polymer: fullerene bulk heterojunction solar cells with enhanced permittivity. Journal of Applied Physics, 104(11), 114517-1-114517-4. [114517]. https://doi.org/10.1063/1.3039191
Maddalena, F., Spijkman, M., Brondijk, J. J., Fonteijn, P., Brouwer, F., Hummelen, J. C., ... de Boer, B. (2008). Device characteristics of polymer dual-gate field-effect transistors. Organic Electronics, 9(5), 839-846. https://doi.org/10.1016/j.orgel.2008.06.004
Mikhnenko, O. V., Cordella, F., Sieval, A. B., Hummelen, J. C., Blom, P. W. M., & Loi, M. A. (2008). Temperature dependence of exciton diffusion in conjugated polymers. Journal of Physical Chemistry B, 112(37), 11601-11604. https://doi.org/10.1021/jp8042363
Macedo, A. G., Zanetti, F., Mikowski, A., Hummelen, J. C., Lepienski, C. M., da Luz, M. G. E., & Roman, L. S. (2008). Improving light harvesting in polymer photodetector devices through nanoindented metal mask films. Journal of Applied Physics, 104(3), 033714-1 - 033714-6. [033714]. https://doi.org/10.1063/1.2968250
Woebkenberg, P. H., Ball, J., Kooistra, F. B., Hummelen, J. C., de Leeuw, D. M., Bradley, D. D. C., & Anthopoulos, T. D. (2008). Low-voltage organic transistors based on solution processed semiconductors and self-assembled monolayer gate dielectrics. Applied Physics Letters, 93(1), [013303]. https://doi.org/10.1063/1.2954015
Woebkenberg, P. H., Bradley, D. D. C., Kronholm, D., Hummelen, J. C., de Leeuw, D. M., Coelle, M., ... Colle, M. (2008). High mobility n-channel organic field-effect transistors based on soluble C-60 and C-70 fullerene derivatives. Synthetic Metals, 158(11), 468-472. https://doi.org/10.1016/j.synthmet.2008.03.016
Lenes, M., Wetzelaer, G-J. A. H., Kooistra, F. B., Veenstra, S., Hummelen, J. C., & Blom, P. W. M. (2008). Fullerene bisadducts for enhanced open-circuit voltages and efficiencies in polymer solar cells. Advanced materials, 20(11), 2116-2119. https://doi.org/10.1002/adma.200702438
Wobkenberg, P. H., Ball, J., Bradley, D. D. C., Anthopoulos, T. D., Kooistra, F., Hummelen, J. C., ... Wöbkenberg, P. H. (2008). Fluorine containing C(60) derivatives for high-performance electron transporting field-effect transistors and integrated circuits. Applied Physics Letters, 92(14), [143310]. https://doi.org/10.1063/1.2907348
Kroon, R., Lenes, M., Hummelen, J. C., Blom, P. W. M., & Boer, B. D. (2008). Small bandgap polymers for organic solar cells (polymer material development in the last 5 years). Polymer Reviews, 48(3), 531-582. https://doi.org/10.1080/15583720802231833
Ball, J., Wobkenberg, P. H., Colleaux, F., Kooistra, F. B., Hummelen, J. C., Bradley, D. D. C., & Anthopoulos, T. D. (2008). Solution processed self-assembled monolayer gate dielectrics for low-voltage organic transistors. Section Title: Electric Phenomena. Materials Research Society proceedings, 1114E(Organic and Hybrid Materials for Large-Area Functional Systems), No pp. given, Paper #: 1114-G09-02. https://doi.org/10.1557/PROC-1114-G09-02

2007

Mandoc, M. M., Kooistra, F. B., Hummelen, J. C., de Boer, B., & Blom, P. W. M. (2007). Effect of traps on the performance of bulk heterojunction organic solar cells. Applied Physics Letters, 91(26), [263505]. https://doi.org/10.1063/1.2821368
Kooistra, F. B., Knol, J., Kastenberg, F., Popescu, L. M., Verhees, W. J. H., Kroon, J. M., & Hummelen, J. C. (2007). Increasing the open circuit voltage of bulk-heterojunction solar cells by raising the LUMO level of the acceptor. Organic letters, 9(4), 551-554. https://doi.org/10.1021/ol062666p
Hummelen, J. C. (2007). Fullerene derivatives and conjugated polymers. Polymer Preprints (American Chemical Society, Division of Polymer Chemistry), 48(1), 58.

2006

Popescu, L. M., van ’t Hof, P., Sieval, A. B., Jonkman, H. T., & Hummelen, J. C. (2006). Thienyl analog of 1-(3-methoxycarbonyl)propyl-1-phenyl-[6,6]-methanofullerene for bulk heterojunction photovoltaic devices in combination with polythiophenes. Applied Physics Letters, 89(21), 213507-1 - 213507-3. [213507]. https://doi.org/10.1063/1.2397003
Hadipour, A., Boer, B. D., Wildeman, J., Kooistra, F. B., Hummelen, J. C., Turbiez, M. G. R., ... Blom, P. W. M. (2006). Solution-processed organic tandem solar cells. Advanced Functional Materials, 16(14), 1897-1903. https://doi.org/10.1002/adfm.200600138
Anthopoulos, T. D., Kooistra, F. B., Wondergem, H. J., Kronholm, D., Hummelen, J. C., & de Leeuw, D. M. (2006). Air-stable n-channel organic transistors based on a soluble C-84 fullerene derivative. Advanced materials, 18(13), 1679-1684. https://doi.org/10.1002/adma.200600068
Mihailetchi, V. D., Xie, H., de Boer, B., Popescu, L. M., Hummelen, J. C., Blom, P. W. M., & Koster, L. J. A. (2006). Origin of the enhanced performance in poly(3-hexylthiophene): [6,6]-phenyl C-61-butyric acid methyl ester solar cells upon slow drying of the active layer. Applied Physics Letters, 89(1), [012107]. https://doi.org/10.1063/1.2212058
Kooistra, FB., Mihailetchi, VD., Popescu, LM., Kronholm, D., Blom, PWM., Hummelen, JC., & Mihailetchi, V. D. (2006). New C-84 derivative and its application in a bulk heterojunction solar cell. Chemistry of Materials, 18(13), 3068-3073. https://doi.org/10.1021/cm052783z
Hadipour, A., de Boer, B., Wildeman, J., Koolstra, F., C. Hummelen, J., G. R. Turbiez, M., ... Blom, P. W. M. (2006). Organic multi-junction solar cells processed from solution with sensitivity from ultraviolet to the near infrared. In Host Publication (Vol. 6192)
Hadipour, A., de Boer, B., Wildeman, J., Kooistra, F., Hummelen, J. C., Turbiez, M. G. R., ... Blom, P. W. M. (2006). Organic multi-junction solar cells processed from solution with sensitivity from ultraviolet to the near infrared - art. no. 61920D. In PL. Heremans, M. Muccini, & EA. Meulenkamp (Eds.), Organic Optoelectronics and Photonics II (pp. D1920-D1920). (PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE); Vol. 6192). BELLINGHAM: SPIE - INT SOC OPTICAL ENGINEERING. https://doi.org/10.1117/12.664850
Koster, L. J. A., Mihailetchi, V. D., Hummelen, J. C., & Blom, P. W. M. (2006). Performance enhancement of poly(3-hexylthiophene):methanofullerene bulk-heterojunction solar cells. Section Title: Electrochemical, Radiational, and Thermal Energy Technology. Proceedings of SPIE-The International Society for Optical Engineering, 6334(Organic Photovoltaics VII), 633409/1-633409/11.

2005

Anthopoulos, T. D., de Leeuw, D. M., Cantatore, E., van 't Hof, P., & Hummelen, J. C. (2005). Solution processible organic transistors and circuits based on a C-70 methanofullerene. Journal of Applied Physics, 98(5), 054503/1 - 054503/6. [054503]. https://doi.org/10.1063/1.2034083
Markov, D. E., Hummelen, J. C., Blom, P. W. M., & Sieval, A. B. (2005). Dynamics of exciton diffusion in poly(p-phenylene vinylene)/fullerene heterostructures. Physical Review. B: Condensed Matter and Materials Physics, 72(4), art. - 045216. [045216]. https://doi.org/10.1103/PhysRevB.72.045216
Markov, D. E., Amsterdam, E., Blom, P. W. M., Sieval, A. B., & Hummelen, J. C. (2005). Accurate measurement of the exciton diffusion length in a conjugated polymer using a heterostructure with a side-chain cross-linked fullerene layer. The Journal of Physical Chemistry A, 109(24), 5266-5274. https://doi.org/10.1021/jp0509663
Janssen, RAJ., Hummelen, JC., & Saricifti, NS. (2005). Polymer-fullerene bulk heterojunction solar cells. MRS Bulletin, 30(1), 33-36. https://doi.org/10.1557/mrs2005.6
Anthopoulos, T. D., De Leeuw, D. M., Setayesh, S., Cantatore, E., Tanase, C., Blom, P. W. M., & Hummelen, J. C. (2005). Integrated complementary-like circuits based on organic amblpolar transistors. 434-439.
Zhang, XC., Sieval, AB., Hummelen, JC., Hessen, B., & Zhang, X. (2005). Polyethene with pendant fullerene moieties. Chemical Communications, 5(12), 1616-1618. https://doi.org/10.1039/b417249c

2004

Anthopoulos, T. D., Tanase, C., Setayesh, S., Meijer, E. J., Hummelen, J. C., Blom, P. W. M., & de Leeuw, D. (2004). Ambipolar organic field-effect transistors based on a solution-processed methanofullerene. Advanced materials, 16(23-24), 2174 - 2179. https://doi.org/10.1002/adma.200400309
Bulle-Lieuwma, CWT., van Duren, JKJ., Yang, N. V., Sieval, AB., Hummelen, JC., Janssen, R. A. J., & Yang, X. (2004). Characterization of poly(p-phenylene vinylene)/methanofullerene blends of polymer solar cells by time-of-flight secondary ion mass spectrometry. Applied Surface Science, 231-232(18), 274 - 277. https://doi.org/10.1016/j.apsusc.2004.03.251
Jeranko, T., Tributsch, H., Sariciftci, NS., & Hummelen, JC. (2004). Patterns of efficiency and degradation of composite polymer solar cells. Solar Energy Materials and Solar Cells, 83(2-3), 247-262. https://doi.org/10.1016/j.solmat.2004.02.028
Yang, X., van Duren, JKJ., Rispens, M. T., Hummelen, J. C., Janssen, R. A. J., & Michels, M. A. J. (2004). Crystalline organization of a methanofullerene as used for plastic solar-cell applications. Advanced materials, 16(9-10), 802-806. https://doi.org/10.1002/adma.200306372
van Duren, JKJ., Yang, XN., Bulle-Lieuwma, CWT., Sieval, AB., Hummelen, JC., Janssen, RAJ., ... Janssen, R. A. J. (2004). Relating the morphology of poly(p-phenylene vinylene)/methanofullerene blends to solar-cell performance. Advanced Functional Materials, 14(5), 425-434. https://doi.org/10.1002/adfm.200305049
Roder, T., Kitzerow, HS., Hummelen, JC., & Röder, T. (2004). Morphology and fluorescence quenching in photovoltaic samples containing fullerene and poly (p-phenylene-vinylene) derivatives. Synthetic Metals, 141(3), 271-275. https://doi.org/10.1016/S0379-6779(03)00412-0
van der Veen, M. H., Rispens, M. T., Jonkman, H. T., & Hummelen, J. C. (2004). Molecules with linear pi-conjugated pathways between all substituents: Omniconjugation . Advanced Functional Materials, 14(3), 215-223. https://doi.org/10.1002/adfm.200305003
Mecher, E., Gallego-Gomez, F., Meerholz, K., Tillmann, H., Horhold, HH., Hummelen, JC., & Hörhold, H-H. (2004). Photophysical and redox NIR-sensitivity enhancement in photorefractive polymer composites. Chemphyschem, 5(2), 277-284. https://doi.org/10.1002/cphc.200300943
Yohannes, T., Zhang, F., Svensson, M., Hummelen, J. C., Andersson, M. R., & Inganäs, O. (2004). Polyfluorene copolymer based bulk heterojunction solar cells. Thin Solid Films, 449(1-2), 152-157. https://doi.org/10.1016/S0040-6090(03)01348-8
Riedel, N. V., Parisi, J., Dyakonov, N. V., Lutsen, L., Vanderzande, D., Hummelen, JC., ... Dyakonov, V. (2004). Effect of temperature and illumination on the electrical characteristics of polymer-fullerene bulk-heterojunction solar cells. Advanced Functional Materials, 14(1), 38-44. https://doi.org/10.1002/adfm.200304399
Markov, D. E., Amsterdam, E., Blom, P. W. M., Sieval, A. B., & Hummelen, J. C. (2004). Exciton diffusion and dissociation in conjugated polymer/fullerene heterostructures. In PL. Heremans, M. Muccini, & H. Hofstraat (Eds.), ORGANIC OPTOELECTRONICS AND PHOTONICS (Vol. 5464, pp. 449 - 454). (PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE); Vol. 5464). BELLINGHAM: SPIE - INT SOC OPTICAL ENGINEERING. https://doi.org/10.1117/12.546041
Chirvase, D., Parisi, J., Hummelen, J. C., & Dyakonov, V. (2004). Influence of nanomorphology on the photovoltaic action of polymer–fullerene composites. Nanotechnology, 15(9), 1317 - 1323. [PII S0957-4484(04)80470-7]. https://doi.org/10.1088/0957-4484/15/9/035
Veen, M. H. V. D., Rispens, M. T., Jonkman, H. T., & Hummelen, J. C. (2004). Molecules with Linear π-Conjugated Pathways between All Substituents: Omniconjugation. Advanced Functional Materials, 14(8).
van der Veen, M., T. Rispens, M., T. Jonkman, H., & C. Hummelen, J. (2004). Molecules with linear p-conjugated pathways between all substituents: Omniconjugation. Advanced Functional Materials, 14(3), 215 - 223.
Roeder, T., -S Kitzerow, H., & C. Hummelen, J. (2004). Morphology and fluorescence quenching in photovoltaic samples containing fullerene and poly(p-phenylene-vinylene) derivatives. Synthetic Metals, 141(3), 271 - 275.
Veen, M. H. V. D., Jonkman, H. T., & Hummelen, J. C. (2004). Omniconjugation. In H. Kuzmany, J. Fink, M. Mehring, & S. Roth (Eds.), American Institute of Physics Conference Proceedings (Proceedings 18th International Winter School on Electronic Properties of Novel Materials) (Vol. 723, pp. 321 - 325). (AIP CONFERENCE PROCEEDINGS; Vol. 723). MELVILLE: University of Groningen, The Zernike Institute for Advanced Materials.
Anthopoulos, T. D., de Leeuw, D. M., Cantatore, E., Setayesh, S., Meijer, E. J., Tanase, C., ... Blom, P. W. M. (2004). Organic complementary-like inverters employing methanofullerene-based ambipolar field-effect transistors. Applied Physics Letters, 85(18), 4205 - 4207. https://doi.org/10.1063/1.1812577
Mihailetchi, V. D., Koster, L. J. A., Hummelen, J. C., & Blom, P. W. M. (2004). Photocurrent generation in polymer-fullerene bulk heterojunctions. Physical Review Letters, 93(21), [216601]. https://doi.org/10.1103/PhysRevLett.93.216601
Mecher, E., Gallego-Gómez, F., Meerholz, K., Tillmann, H., -H Hörhold, H., & C. Hummelen, J. (2004). Photo-physical and Redox-chemical NIR-Sensitivity Enhancement in Photorefractive Polymer Composites. In Host Publication (Vol. 5216, pp. 192 - 201)
K. J. Van Duren, J., Yang, X., Loos, J., W. T. Bulle-Lieuwma, C., B. Sieval, A., C. Hummelen, J., & A. J. Janssen, R. (2004). Relating the morphology of a poly(p-phenylene vinylene)/methanofullerene blend to bulk heterojunction solar cell performance. In Proceedings of SPIE: The International Society for Optical Engineerin (Vol. 5215, pp. 99-110)

2003

Meijer, EJ., de Leeuw, DM., Setayesh, S., van Veenendaal, E., Huisman, BH., Blom, PWM., ... Klapwijk, TM. (2003). Corrigendum: Solution-processed ambipolar organic field-effect transistors and inverters. Nature Materials, 2(12), 678-682. https://doi.org/10.1038/nmat1023
Mihailetchi, V. D., Blom, P. W. M., Hummelen, J. C., & Rispens, M. T. (2003). Cathode dependence of the open-circuit voltage of polymer: fullerene bulk heterojunction solar cells. Journal of Applied Physics, 94(10), 6849-6854. https://doi.org/10.1063/1.1620683
Ramos, AM., Meskers, SCJ., van Hal, PA., Knol, J., Hummelen, JC., Janssen, RAJ., ... Janssen, R. A. J. (2003). Photoinduced multistep energy and electron transfer in an oligoaniline-oligo(p-phenylene vinylene)-fullerene triad. The Journal of Physical Chemistry A, 107(44), 9269-9283. https://doi.org/10.1021/jp035549+
van Duren, J. K. J., Mihailetchi, V. D., Blom, P. W. M., van Woudenbergh, T., Hummelen, J. C., Rispens, M. T., ... Wienk, M. M. (2003). Injection-limited electron current in a methanofullerene. Journal of Applied Physics, 94(7), 4477-4479. https://doi.org/10.1063/1.1604959
Meijer, E. J., Leeuw, D. M. D., Setayesh, S., Veenendaal, E. V., Huisman, B. H., Blom, P. W. M., ... Klapwijk, T. M. (2003). Solution-processed ambipolar organic field-effect transistors and inverters. Nature Materials, 2(10), 678-682. https://doi.org/10.1038/nmat978
Beckers, EHA., van Hal, PA., Dhanabalan, A., Meskers, SCJ., Knol, J., Hummelen, JC., ... Janssen, R. A. J. (2003). Charge transfer kinetics in fullerene-oligomer-fullerene triads containing alkylpyrrole units. The Journal of Physical Chemistry A, 107(32), 6218-6224. https://doi.org/10.1021/jp035402i
Svensson, M., Zhang, FL., Veenstra, SC., Verhees, WJH., Hummelen, JC., Kroon, JM., ... Andersson, M. R. (2003). High-performance polymer solar cells of an alternating polyfluorene copolymer and a fullerene derivative. Advanced materials, 15(12), 988 - 991. https://doi.org/10.1002/adma.200304150
Chirvase, D., Chiguvare, Z., Knipper, A., Parisi, J., Dyakonov, N. V., Hummelen, JC., & Knipper, M. (2003). Electrical and optical design and characterisation of regioregular poly(3-hexylthiophene-2,5diyl)/fullerene-based heterojunction polymer solar cells. Synthetic Metals, 138(1-2), 299-304. https://doi.org/10.1016/S0379-6779(03)00027-4
Zhang, FL., Johansson, M., Andersson, MR., Hummelen, JC., Inganas, O., & Inganäs, O. (2003). Polymer solar cells based on MEH-PPV and PCBM. Synthetic Metals, 137(1-3), 1401-1402. https://doi.org/10.1016/S0379-6779(02)01059-7
Rispens, MT., Sanchez, L., Beckers, EHA., van Hal, PA., Schenning, APHJ., El-ghayoury, A., ... Janssen, R. A. J. (2003). Supramolecular fullerene architectures by quadruple hydrogen bonding. Synthetic Metals, 135(1-3), 801-803. https://doi.org/10.1016/S0379-6779(02)00877-9
Chirvase, D., Chiguvare, Z., Knipper, M., Parisi, J., Dyakonov, V., & Hummelen, J. C. (2003). Temperature dependent characteristics of poly(3 hexylthiophene)-fullerene based heterojunction organic solar cells. Journal of Applied Physics, 93(6), 3376-3383. https://doi.org/10.1063/1.1545162
Mihailetchi, V. D., Duren, J. K. J. V., Blom, P. W. M., Hummelen, J. C., Janssen, R. A. J., Kroon, J. M., ... Wienk, M. M. (2003). Electron transport in a methanofullerene. Advanced Functional Materials, 13(1), 43-46. https://doi.org/10.1002/adfm.200390004
Wienk, MM., Kroon, JM., Verhees, WJH., Knol, J., Hummelen, J. C., van Hal, PA., & Janssen, R. A. J. (2003). Efficient methano[70]fullerene/MDMO-PPV bulk heterojunction photovoltaic cells. Angewandte Chemie-International Edition, 42(29), 3371-3375. https://doi.org/10.1002/anie.200351647
Rispens, MT., Meetsma, A., Rittberger, R., Brabec, CJ., Sariciftci, NS., & Hummelen, JC. (2003). Influence of the solvent on the crystal structure of PCBM and the efficiency of MDMO-PPV: PCBM 'plastic' solar cells. Chemical Communications, (17), 2116-2118. https://doi.org/10.1039/b305988j
Meijer, E. J., de Leeuw, D. M., Setayesh, S., van Veenendaal, E., Huisman, B. H., Blom, P. W. M., ... Klapwijk, T. M. (2003). Solution-processed ambipolar organic field-effect transistors and inverters (Erratum to vol 2, pg 678, 2003). Nature Materials, 2(12), 834 - 834.
Winder, C., Loi, M. A., Sariciftci, N. S., Denk, P., Padinger, F., Hummelen, J. C., ... Torres, T. (2003). Towards increasing the photon harvesting in bulk heterojunction polymer solar cells. In Host Publication (Vol. 22, pp. 4801)
Winder, C., A. Loi, M., Serdar Sariciftci, N., Denk, P., Padinger, F., C. Hummelen, J., ... Torres, T. (2003). Towards increasing the photon harvesting in bulk heterojunction polymer solar cells. Proceedings of SPIE-The International Society for Optical Engineering, 4801(Organic Photovoltaics III), 22 - 33.
Winder, C., Loi, M. A., Sariciftci, N. S., Denk, P., Padinger, F., Hummelen, J. C., ... Torres, T. (2003). Towards increasing the photon harvesting in bulk heterojunction polymer solar cells. Electrochemical, Radiational, and Thermal Energy Technology. Proceedings of SPIE-The International Society for Optical Engineering, 4801(Organic Photovoltaics III), 22-33.

2002

Parisi, J., Dyakonov, N. V., Pientka, M., Riedel, N. V., Deibel, C., Brabec, CJ., ... Hummelen, JC. (2002). Charge transfer and transport in polymer-fullerene solar cells. Zeitschrift fur Naturforschung Section A-A Journal of Physical Sciences, 57(12), 995-1000.
Brabec, C. J., Winder, C., Sariciftci, N. S., Hummelen, J. C., Dhanabalan, A., van Hal, P. A., & Janssen, R. A. J. (2002). A low-bandgap semiconducting polymer for photovoltaic devices and infrared emitting diodes. Advanced Functional Materials, 12(10), 709-712. https://doi.org/10.1002/1616-3028(20021016)12:10<709::AID-ADFM709>3.0.CO;2-N
Kroon, J. M., Wienk, M. M., Verhees, W. J. H., & Hummelen, J. C. (2002). Accurate efficiency determination and stability studies of conjugated polymer/fullerene solar cells. Thin Solid Films, 403-404(7), 223-228. [PII S0040-6090(01)01589-9]. https://doi.org/10.1016/S0040-6090(01)01589-9
Sánchez, L., Rispens, M. T., & Hummelen, J. C. (2002). A supramolecular array of fullerenes by quadruple hydrogen bonding. Angewandte Chemie-International Edition in English, 41(5), 838 - 840. https://doi.org/10.1002/1521-3757(20020301)114:5<866::AID-ANGE866>3.0.CO;2-S
Parisi, J., Dyakonov, V., Pientka, M., Riedel, I., Deibel, C., Brabec, C. J., ... Hummelen, J. C. (2002). Charge transfer and transport in polymer-fullerene solar cells. In International Conference PV in Europe--from PV technology to energy solutions Rome.
Mühlbacher, D., Neugebauer, H., Cravino, A., Sariciftci, N. S., van Duren, J. K. J., Dhanabalan, A., ... Hummelen, J. C. (2002). Comparison of electrochemical and spectroscopic data of the low-bandgap polymer ptptb. Molecular Crystals and Liquid Crystals, 385(1), 85-92. https://doi.org/10.1080/713738793
Riedel, I., Dyakonov, V., Parisi, J., Lutsen, L., Vanderzande, D., & Hummelen, J. C. (2002). Current-Voltage Characteristics of Polymer-Fullerene Solar Cells. In Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference, 2002 (pp. 1322-1325). University of Groningen, Stratingh Institute for Chemistry.
Dyakonov, V., Riedel, I., Deibel, C., Parisi, J., Brabec, C. J., Sariciftci, N. S., & Hummelen, J. C. (2002). Electronic properties of polymer-fullerene solar cells. In Proceedings of the MRS Spring meeting 2001 (Vol. 665). San Francisco.
van Duren, J. K. J., Morrissey, F., Leewis, C. M., Kivits, K. P. H., van IJzendoorn, L. J., Rispens, M. T., ... Janssen, R. A. J. (2002). In-situ compositional and structural analysis of plastic solar cells. Advanced Functional Materials, 12(10), 665 - 669. https://doi.org/10.1002/1616-3028(20021016)12:10<665::AID-ADFM665>3.0.CO;2-J
Mecher, E., Gallego-Gómez, F., Tillmann, H., Hörhold, H-H., Hummelen, J. C., Meerholz, K., & H. Horhold, H. (2002). Near-infrared sensitivity enhancement of photorefractive polymer composites by pre-illumination. Nature, 418(6901), 959 - 964. https://doi.org/10.1038/nature00975
Saab, A. P., Stucky, G. D., Srdanov, V. I., Hummelen, J. C., González, M., & Wudl, F. (2002). Optical and transport properties of an alkali-doped methanofullerene. Journal of Chemical Physics, 117(11), 5109 - 5112. https://doi.org/10.1063/1.1506146
Däubler, T. K., Kulikovsky, L., Neher, D., Cimrová, V., Hummelen, J. C., Mecher, E., ... Meerholz, K. (2002). Photoconductivity and Charge-Carrier Photogeneration in Photorefractive Polymers. In M. Lawson, & K. Meerholz (Eds.), Nonlinear optical transmission processes and organic photorefractive materials (Proceedings of SPIE; Vol. 4462). Society of Photo-optical Instrumentation Engineers.
K. Daeubler, T., Kulikovsky, L., Neher, D., Cimrova, V., C. Hummelen, J., Mecher, E., ... Meerholz, K. (2002). Photoconductivity and charge-carrier photogeneration in photorefractive polymers. Proceedings of SPIE-The International Society for Optical Engineering, 4462, 206 - 216.
Rispens, M. T., & Hummelen, J. C. (2002). Photovoltaic applications. In Fullerenes: from synthesis to optoelectronic properties (pp. 387-435). (Developments in Fullerene Science; Vol. 4). Berlin: Springer.
Zhang, F. L., Johansson, M., Andersson, M. R., Hummelen, J. C., Ingan�s, O., Inganäs, O., & Inganas, O. (2002). Polymer photovoltaic cells with conducting polymer anodes. Advanced materials, 14(9), 662 - 665. https://doi.org/10.1002/1521-4095(20020503)14:9<662::AID-ADMA662>3.0.CO;2-N
Winder, C., Mühlbacher, D., Neugebauer, H., Sariciftci, N. S., Brabec, C. J., Janssen, R. A. J., & Hummelen, J. C. (2002). Polymer solar cells and infrared light emitting diodes: Dual function low bandgap polymer. Molecular Crystals and Liquid Crystals, 385(1), 93-100. https://doi.org/10.1080/713738797
Beckers, E. H. A., Schenning, A. P. H. J., Hal, P. A. V., El-ghayoury, A., Sánchez, L., Hummelen, J. C., ... S�nchez, L. (2002). Preferential hetero-dimer formation and equilibrium dynamics of self-complementary bifunctional oligo(p-phenylenevinylene) and C60 ureido-pyrimidinone derivatives in solution. Chemical Communications, (23), 2888 - 2889. https://doi.org/10.1039/b208074e
Winder, C., Matt, G., Hummelen, J. C., Janssen, R. A. J., Sariciftci, N. S., & Brabec, C. J. (2002). Sensitization of low bandgap polymer bulk heterojunction solar cells. Thin Solid Films, 403-404(7), 373 - 379. [PII S0040-6090(01)01588-7]. https://doi.org/10.1016/S0040-6090(01)01588-7
Beckers, E. H. A., van Hal, P. A., Schenning, A. P. H. J., El Ghayoury, A., Peeters, E., Rispens, M. T., ... Janssen, R. A. J. (2002). Singlet-energy transfer in quadruple hydrogen-bonded oligo(p-phenylenevinylene)-fullerene dyads. Journal of Materials Chemistry, 12(7), 2054 - 2060. https://doi.org/10.1039/b201186g
Brabec, C. J., Cravino, A., Meissner, D., Sariciftci, N. S., Rispens, M. T., S�nchez, L., ... Sanchez, L. (2002). The influence of materials work function on the open circuit voltage of plastic solar cells. Thin Solid Films, 403-404(7), 368 - 372. [PII S0040-6090(01)01586-3]. https://doi.org/10.1016/S0040-6090(01)01586-3

2001

De Ceuster, J., Goovaerts, E., Bouwen, A., Dyakonov, V., & Hummelen, J. C. (2001). A high-frequency light-induced electron spin resonance study of conjugated polymer/fullerene composites. Synthetic Metals, 124(1), 99 - 101. https://doi.org/10.1016/S0379-6779(01)00437-4
Ramos, A. M., Rispens, M. T., Hummelen, J. C., & Janssen, R. A. J. (2001). A poly(p-phenylene ethynylene vinylene) with pendant fullereness. Synthetic Metals, 119(1-3), 171 - 172. https://doi.org/10.1016/s0379-6779(00)00600-7
Hummelen, J. C. (2001). Bottom-Up Approaches Towards Functional Fullerene-Containing Nanostructured Materials. In H. Kuzmany, J. Fink, M. Mehring, & S. Roth (Eds.), AIP Conference proceedings 591 "Electronic properties of novel materials-science and technology of molecular nanostructures (pp. 617-621). (AIP CONFERENCE PROCEEDINGS; Vol. 591). MELVILLE: University of Groningen, Stratingh Institute for Chemistry.
Hummelen, J. C. (2001). Bottom-up approaches towards functional fullerene-containing nanostructured materials. AIP Conference Proceedings, 591(1), 617 - 621. https://doi.org/10.1063/1.1426943
Dhanabalan, A., Knol, J., Hummelen, J. C., & Janssen, R. A. J. (2001). Design and synthesis of new processible donor-acceptor dyad and triads. Synthetic Metals, 119(1), 519 - 522. https://doi.org/10.1016/S0379-6779(00)00912-7
Brabec, C. J., Zerza, G., Sariciftci, N. S., Cerullo, G., Lanzani, G., De Silvestri, S., & Hummelen, J. C. (2001). Direct observation of the ultrafast electron transfer process in a polymer/fullerene blend. Section Title: Physical Properties of Synthetic High Polymers. Springer Series in Chemical Physics, 66(Ultrafast Phenomena XII), 589-591.
Dyakonov, V., Godovsky, D., Meyer, J., Parisi, J., Brabec, C. J., Sariciftci, N. S., & Hummelen, J. C. (2001). Electrical admittance studies of polymer photovoltaic cells. Synthetic Metals, 124(1), 103 - 105. https://doi.org/10.1016/S0379-6779(01)00438-6
Dyakonov, V., Riedel, I., Deibel, C., Parisi, J., Brabec, C. J., Sariciftci, N. S., & Hummelen, J. C. (2001). Electronic properties of polymer-fullerene solar cells studied with light-induced electron spin resonance and admittance spectroscopy. In 17th EPSE Conference Proceedings (Vol. 725, pp. 191 - 197). London: James and James.
Ceuster, J. D., Goovaerts, E., Bouwen, A., Hummelen, J. C., & Dyakonov, V. (2001). High-frequency (95 GHz) electron paramagnetic resonance study of the photoinduced charge transfer in conjugated polymer-fullerene composites. Physical Review B, 64(19), 195206/1 - 195206/6. [195206]. https://doi.org/10.1103/PhysRevB.64.195206
Brabec, C. J., Winder, C., Scharber, M. C., Sariciftci, N. S., Hummelen, J. C., Svensson, M., & Andersson, M. R. (2001). Influence of disorder on the photoinduced excitations in phenyl substituted polythiophenes. Journal of Chemical Physics, 115(15), 7235 - 7244. https://doi.org/10.1063/1.1404984
Brabec, C. J., Shaheen, S. E., Fromherz, T., Padinger, F., Hummelen, J. C., Dhanabalan, A., ... Sariciftci, N. S. (2001). Organic photovoltaic devices produced from conjugated polymer/methanofullerene bulk heterojunctions. Synthetic Metals, 121(1-3), 1517 - 1520. https://doi.org/10.1016/S0379-6779(00)01445-4
Brabec, C. J., Cravino, A., Meissner, D., Sariciftci, N. S., Fromherz, T., Rispens, M. T., ... Sanchez, L. (2001). Origin of the open circuit voltage of plastic solar cells. Advanced Functional Materials, 11(5), 374 - 380. https://doi.org/10.1002/1616-3028(200110)11:5<374::AID-ADFM374>3.0.CO;2-W
Brabec, C. J., Cravino, A., Zerza, G., Sariciftci, N. S., Kiebooms, R., Vanderzande, D., & Hummelen, J. C. (2001). Photoactive Blends of Poly(para-phenylenevinylene) (PPV) with Methanofullerenes from a Novel Precursor: Photophysics and Device Performance. The Journal of Physical Chemistry B, 105(8), 1528 - 1536. https://doi.org/10.1021/jp003407z
Ramos, A. M., Rispens, M. T., van Duren, J. K. J., Hummelen, J. C., & Janssen, R. A. J. (2001). Photoinduced electron transfer and photovoltaic devices of a conjugated polymer with pendant fullerenes. Journal of the American Chemical Society, 123(27), 6714 - 6715. https://doi.org/10.1021/ja015614y
van Hal, P. A., Langeveld-Voss, B. M. W., Meskers, S. C. J., Hummelen, J. C., Janssen, R. A. J., & Knol, J. (2001). Photoinduced energy and electron transfer in a C-60-6T-C-60 triad. Synthetic Metals, 121(1-3), 1597 - 1598. https://doi.org/10.1016/s0379-6779(00)01313-8
Hal, P. A. V., Knol, J., Langeveld-Voss, B. M. W., Meskers, S. C. J., Hummelen, J. C., & Janssen, R. A. J. (2001). Photoinduced singlet and triplet energy transfer in fullerene-oligothiophene-fullerene triads. Synthetic Metals, 116(1-3), 123 - 127. https://doi.org/10.1016/S0379-6779(00)00528-2
Brabec, C. J., Sariciftci, N. S., & Hummelen, J. C. (2001). Plastic solar cells. Advanced Functional Materials, 11(1), 15 - 26. https://doi.org/10.1002/1616-3028(200102)11:1<15::AID-ADFM15>3.0.CO;2-A
Riedel, I., Dyakonov, V., Parisi, J., Brabec, C. J., Sariciftci, N. S., & Hummelen, J. C. (2001). Polymer fullerene networks for photovoltaic applications. In 17th EPSE Conference Proceedings (pp. 24 - 28). London: James and James.
Inganäs, O., Roman, L. S., Zhang, F., Johansson, D. M., Andersson, M. R., & Hummelen, J. C. (2001). Recent progress in thin film organic photodiodes. Synthetic Metals, 121(1-3), 1525 - 1528. https://doi.org/10.1016/S0379-6779(00)01448-X
Mühlbacher, D., Brabec, C. J., Sariciftci, N. S., Kotov, B. V., Berendyaev, V. I., Rumyantsev, B. M., & Hummelen, J. C. (2001). Sensitization of photoconductive polyimides for photovoltaic applications. Synthetic Metals, 121(1-3), 1609 - 1610.
Dyakonov, V., Godovsky, D., Parisi, J., Brabec, C. J., Sariciftci, N. S., Hummelen, J. C., ... Goovaerts, E. (2001). Spectroscopy on polymer-fullerene composites and photovoltaic cells. Synthetic Metals, 121(1-3), 1529 - 1532. https://doi.org/10.1016/S0379-6779(00)01156-5
Hummelen, J. C., Knol, J., & Sánchez, L. (2001). Stability issues of conjugated polymer / fullerene solar cells from a chemical viewpoint. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.
Hummelen, J. C., Sanchez, L., Sa´nchez, L., & Knol, J. (2001). Stability issues of conjugated polymer/fullerene solar cells from a chemical viewpoint. In Host Publication (Vol. 4108, pp. 76 - 84)
Rispens, M. T., Sánchez, L., Knol, J., & Hummelen, J. C. (2001). Supramolecular organization of fullerenes by quadruple hydrogen bonding. Chemical Communications, (2), 161 - 162. https://doi.org/10.1039/b008005p
Vangeneugden, D. L., Vanderzande, D. J. M., Salbeck, J., Hal, P. A. V., Janssen, R. A. J., Hummelen, J. C., ... Sariciftci, N. S. (2001). Synthesis and Characterization of a Poly(1,3-dithienylisothianaphthene) Derivative for Bulk Heterojunction Photovoltaic Cells. The Journal of Physical Chemistry B, 105(45), 11106 - 11113. https://doi.org/10.1021/jp013073t
Gebeyehu, D., Brabec, C. J., Padinger, F., Fromherz, T., Hummelen, J. C., Badt, D., ... Sariciftci, N. S. (2001). The interplay of efficiency and morphology in photovoltaic devices based on interpenetrating networks of conjugated polymers with fullerenes. Synthetic Metals, 118(1-3), 1 - 9. https://doi.org/10.1016/S0379-6779(00)00276-9
Brabec, C. J., Zerza, G., Cerullo, G., De Silvestri, S., Luzzati, S., Hummelen, J. C., & Sariciftci, N. S. (2001). Tracing photoinduced electron transfer process in conjugated polymer/fullerene bulk heterojunctions in real time. Chemical Physics Letters, 340(3-4), 232 - 236. https://doi.org/10.1016/S0009-2614(01)00431-6
Hal, P. A. V., Peeters, E., Langeveld-Voss, B. M. W., Janssen, R. A. J., Lanzani, G., Cerullo, G., ... Hummelen, J. C. (2001). Ultrafast energy and electron transfer in donor-acceptor molecules for photovoltaics. In Technical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics, 2001. CLEO '01 (pp. 62-63). Baltimore, MD, USA: University of Groningen, Stratingh Institute for Chemistry.
Shaheen, S. E., Brabec, C. J., Sariciftci, N. S., Padinger, F., Fromherz, T., & Hummelen, J. C. (2001). 2.5% efficient organic plastic solar cells. Applied Physics Letters, 78(6), 841 - 843. https://doi.org/10.1063/1.1345834

2000

Brabec, C. J., Johannson, H., Padinger, F., Neugebauer, H., Hummelen, J. C., & Sariciftci, N. S. (2000). Photoinduced FT-IR spectroscopy and CW-photocurrent measurements of conjugated polymers and fullerenes blended into a conventional polymer matrix. Solar Energy Materials and Solar Cells, 61(1), 19-33. https://doi.org/10.1016/S0927-0248(99)00093-8
Neugebauer, H., Brabec, C., Hummelen, J. C., & Sariciftci, N. S. (2000). Stability and photodegradation mechanisms of conjugated polymer/fullerene plastic solar cells. Solar Energy Materials and Solar Cells, 61(1), 35-42. https://doi.org/10.1016/S0927-0248(99)00094-X
Fromherz, T., Padinger, F., Gebeyehu, D., Brabec, C. J., Hummelen, J. C., & Sariciftci, N. S. (2000). Comparison of photovoltaic devices containing various blends of polymer and fullerene derivatives. Solar Energy Materials and Solar Cells, 63(1), 61 - 68.
Fromherz, T., Padinger, F., Gebeyehu, D., Brabec, C., Hummelen, J. C., & Sariciftci, N. S. (2000). Comparison of photovoltaic devices containing various blends of polymer and fullerene derivatives. Bulletin of the Chemical Society of Ethiopia, 14(1). https://doi.org/10.1016/S0927-0248(00)00020-9
Cerullo, G., Lanzani, G., Silvestri, S. D., Brabec, C. J., Zerza, G., Sariciftci, N. S., & Hummelen, J. C. (2000). Direct observation of the ultrafast electron transfer process in a polymer/fullerene blend. In Conference Digest. 2000 International Quantum Electronics Conference, 2000 (pp. 241-241). University of Groningen, Stratingh Institute for Chemistry.
Cerullo, G., Lanzani, G., Silvestri, S. D., Brabec, C. J., Zerza, G., Sariciftci, N. S., & Hummelen, J. C. (2000). Direct observation of the ultrafast electron transfer process in a polymer/fullerene blend. In Technical Digest Quantum Electronics and Laser Science Conference, 2000. (QELS 2000) (pp. 245-246). University of Groningen, Stratingh Institute for Chemistry.
Padinger, F., Brabec, C. J., Fromherz, T., Hummelen, J. C., & Sariciftci, N. S. (2000). Fabrication of large area photovoltaic devices containing various blends of polymer and fullerene derivatives by using the doctor blade technique. Opto-Electronics Review, 8(4), 280 - 283.
Padinger, F., Brabec, C. J., Fromherz, T., Hummelen, J. C., & Sariciftci, N. S. (2000). Fabrication of large area photovoltaic devices containing various blends of polymer and fullerene derivatives by using the doctor blade technique. Bulletin of the Chemical Society of Ethiopia, 14(1).
Peeters, E., van Hal, P. A., Janssen, R. A. J., Brabec, C. J., Sariciftci, N. S., Hummelen, J. C., & Knol, J. (2000). Oligomer-Fullerene Dyads: Photophysics and Performance as Active Layer Material in Photovoltaic Cells. In Electrochemical Society Proceedings (Vol. 2000-11, pp. 69-75). Pennington: The Electrochemical Society.
Hummelen, J. C., & Knol, J. (2000). Photodimerization of a m-phenylenebis(arylmethanofullerene): The first rigorous proof for photochemical inter-fullerene [2+2] cycloaddition: The First Rigorous Proof for Photochemical Inter-Fullerene [2 + 2] Cycloaddition. Journal of the American Chemical Society, 122(13), 3226 - 3227. https://doi.org/10.1021/ja993931n
Hal, P. A. V., Knol, J., Langeveld-Voss, B. M. W., Meskers, S. C. J., Hummelen, J. C., & Janssen, R. A. J. (2000). Photoinduced energy and electron transfer in fullerene- oligothiophene-fullerene triads. The Journal of Physical Chemistry A, 104(25), 5974 - 5988. https://doi.org/10.1021/jp0012597
Gebeyehu, D., Padinger, F., Fromherz, T., Hummelen, J. C., & Sariciftci, N. S. (2000). Photovoltaic properties of conjugated polymer/fullerene composites on large area flexible substrates. Bulletin of the Chemical Society of Ethiopia, 14(1), 57 - 68. https://doi.org/10.4314/bcse.v14i1.72019
Chen, L. C., Godovsky, D., Inganäs, O., Hummelen, J. C., Janssen, R. A. J., Svensson, M., ... Janssens, RAJ. (2000). Polymer photovoltaic devices from stratified multilayers of donor-acceptor blends. Advanced materials, 12(18), 1367 - 1370. https://doi.org/10.1002/1521-4095(200009)12:18<1367::AID-ADMA1367>3.0.CO;2-Z
Hummelen, J. C. (2000). Spaghetti met ballen. Default journal.
Hummelen, J. C. (2000). Spaghetti with meatballs. Default journal.
Dyakonov, V., Riedel, I., Godovsky, D., Parisi, J., Ceuster, J. D., Goovaerts, E., & Hummelen, J. C. (2000). Spectroscopy on Polymer-Fullerene Photovoltaic Cells. In Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference, 2000 (pp. 814-817). Anchorage, AK, USA: University of Groningen, Stratingh Institute for Chemistry.
Hummelen, JC., Knol, J., & Sanchez, L. (2000). Stability issues of conjugated polymer/fullerene solar cells from a chemical viewpoint. In ZH. Kafafi (Ed.), ORGANIC PHOTOVOLTAICS (pp. 76-84). (PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE); Vol. 4108). BELLINGHAM: SPIE - INT SOC OPTICAL ENGINEERING.
Hal, P. A. V., Langeveld-Voss, B. M. W., Peeters, E., Janssen, R. A. J., Knol, J., & Hummelen, J. C. (2000). Synthesis and Photophysical Properties of Novel Fullerene Derivatives as Model Compounds for Bulk-Heterojunction PV Cells. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.
Peeters, E., Hal, P. A. V., Knol, J., Brabec, C. J., Sariciftci, N. S., Hummelen, J. C., & Janssen, R. A. J. (2000). Synthesis, photophysical properties, and photovoltaic devices of oligo(p-phenylene vinylene)-fullerene dyads. Journal of Physical Chemistry B, 104(44), 10174 - 10190. https://doi.org/10.1021/jp001717b
Godovsky, D., Chen, L. C., Pettersson, L., Inganäs, O., Andersson, M. R., Hummelen, J. C., & Inganas, O. (2000). The use of combinatorial materials development for polymer solar cells. Advanced Materials for Optics and Electronics, 10(2), 47 - 54. https://doi.org/10.1002/1099-0712(200003/04)10:2<47::AID-AMO397>3.0.CO;2-W
Meskers, S. C. J., van Hal, P. A., Spiering, A. J. H., Hummelen, J. C., van der Meer, A. F. G., & Janssen, R. A. J. (2000). Time-resolved infrared-absorption study of photoinduced charge transfer in a polythiophene-methanofullerene composite film. Physical Review B, 61(15), 9917 - 9920. https://doi.org/10.1103/PhysRevB.61.9917
Roman, L. S., Inganäs, O., Granlund, T., Nyberg, T., Svensson, M., Andersson, M. R., ... Inganas, O. (2000). Trapping light in polymer photodiodes with soft embossed gratings. Advanced materials, 12(3), 189 - +. https://doi.org/10.1002/(SICI)1521-4095(200002)12:3<189::AID-ADMA189>3.0.CO;2-2
Apperloo, J. J., Langeveld-Voss, B. M. W., Knol, J., Hummelen, J. C., & Janssen, R. A. J. (2000). Unexpected dimerization of oxidized fullerene-oligothiophene- fullerene triads. Advanced materials, 12(12), 908 - 911. https://doi.org/10.1002/1521-4095(200006)12:12<908::aid-adma908>3.0.co;2-k

1999

Brabec, C. J., Padinger, F., Sariciftci, N. S., & Hummelen, J. C. (1999). Photovoltaic properties of conjugated polymer/methanofullerene composites embedded in a polystyrene matrix. Journal of Applied Physics, 85(9), 6866 - 6872. https://doi.org/10.1063/1.370205
Gebeyehu, D., Padinger, F., Brabec, C. J., Fromherz, T., Hummelen, J. C., & Sariciftci, N. S. (1999). Characterization of large area flexible plastic solar cells based on conjugated polymer/fullerene composites. International Journal of Photoenergy, 1(2), 95 - 100. https://doi.org/10.1155/S1110662X99000185
Godovsky, D., Inganäs, O., Brabec, C. J., Sariciftci, N. S., Hummelen, J. C., Janssen, R. A. J., ... Martin, N. (1999). Combinatorial chemistry approach to development of molecular plastic solar cells. In EPRINTS-BOOK-TITLE (pp. 483 - 486). (CP486). University of Groningen, Stratingh Institute for Chemistry.
Mecher, E., Bräuchle, C., Hörhold, H. H., Hummelen, J. C., & Meerholz, K. (1999). Comparison of new photorefractive composites based on a poly(phenylene vinylene) derivative with traditional poly(n-vinylcarbazole) composites. Physical Chemistry Chemical Physics, 1(8), 1749 - 1756. https://doi.org/10.1039/a809732a
Padinger, F., Brabec, C. J., Hummelen, J. C., Janssen, R. A. J., & Sariciftci, N. S. (1999). CW-photocurrent measurements of conjugated polymers and fullerenes blended into a conventional polymer matrix. Synthetic Metals, 102(1-3), 1285 - 1286. https://doi.org/10.1016/S0379-6779(98)01206-5
Hummelen, J. C., Bellavia-Lund, C., & Wudl, F. (1999). Heterofullerenes. Fullerenes and Related Structures, 199, 93 - 134.
Hummelen, J. C., Bellavia-Lund, C., & Wudl, F. (1999). Heterofullerenes. In FULLERENES AND RELATED STRUCTURES (pp. 93-134). (TOPICS IN CURRENT CHEMISTRY; Vol. 199). BERLIN: University of Groningen, Stratingh Institute for Chemistry.
Sternfeld, T., Wudl, F., Hummelen, J. C., Weitz, A., Haddon, R. C., & Rabinovitz, M. (1999). H-1 NMR of C61H26-: the aromatic character of C-60 upon reduction - a view from the bridge of C61H2. Chemical Communications, (23), 2411 - 2412.
Zoriniants, G., Dyakonov, V., Scharber, M. C., Brabec, C. J., Janssen, R. A. J., Hummelen, J. C., & Sariciftci, N. S. (1999). Light-induced ESR studies in conjugated polymer-fullerene composites. Synthetic Metals, 102(1-3), 1241 - 1242. https://doi.org/10.1016/S0379-6779(98)01349-6
Janssen, R. A. J., Peeters, E., Langeveld-Voss, B. M. W., Hal, P. A. V., Knol, J., & Hummelen, J. C. (1999). Oligomer-fullerene dyads and triads as model compounds for bulk-heterojunction PV cells. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.
Janssen, R. A. J., Peeters, E., Langeveld-Voss, B. M. W., van Hal, P. A., Hummelen, J. C., & Knol, J. (1999). Oligomer-fullerene dyads and triads as model compunds for bulk-heterojunction PV cells. In CP486 (pp. 155 - 160). (CP486). American Institute of Physics.
Brabec, C. J., Scharber, M. C., Johansson, H., Comoretto, D., Dellepiane, G., Moggio, I., ... Moggio, N. V. (1999). Photoexcitations in carbazolyl substituted polydiacetylene (PDA) fullerene composites. Synthetic Metals, 101(1-3), 298 - 299. https://doi.org/10.1016/S0379-6779(98)00777-2
Dyakonov, V., Zoriniants, G., Scharber, M. C., Brabec, C. J., Janssen, R. A. J., & Hummelen, J. C. (1999). Photoinduced charge carriers in conjugated polymer-fullerene composites studied with light-induced electron-spin resonance. Physical Review B, 59(12), 8019 - 8025. https://doi.org/10.1103/physrevb.59.8019
Brabec, C. J., Johannson, H., Padinger, F., Neugebauer, H., Hummelen, J. C., & Sariciftci, N. S. (1999). Photoinduced FT-IR spectroscopy and CW-photocurrent measurement of conjugated polymers and fullerenes blended into a conventional polymer matrix - the oligomer appraoch. Solar Energy Materials and Solar Cells, 61(1), 19 - 33.
Johansson, H., Brabec, C. J., Neugebauer, H., Kvarnstrom, C., Hummelen, J. C., Janssen, R. A. J., & Sariciftci, N. S. (1999). Photoinduced FT-IR spectroscopy of conjugated polymer/fullerene composites embedded into conventional host polymer matrices. Synthetic Metals, 101(1-3), 192 - 193. https://doi.org/10.1016/s0379-6779(98)01108-4
Brabec, C. J., Padinger, F., Hummelen, J. C., Janssen, R. A. J., & Sariciftci, N. S. (1999). Realization of Large Area Flexible Fullerene - Conjugated Polymer Photocells: A Route to Plastic Solar Cells. Synthetic Metals, 102(1). https://doi.org/10.1016/S0379-6779(98)00366-X
Brabec, C. J., Padinger, F., Hummelen, J. C., Janssen, R. A. J., & Sariciftci, N. S. (1999). Realization of large area flexible fullerene - Conjugated polymer photocells: A route to plastic solar cells: A route to plastic solar cells. Synthetic Metals, 102(1-3), 861 - 864. https://doi.org/10.1016/s0379-6779(98)00366-x
Neugebauer, H., Brabec, C. J., Hummelen, J. C., Janssen, R. A. J., & Sariciftci, N. S. (1999). Stability studies and degradation analysis of plastic solar cell materials by FTIR spectroscopy. Synthetic Metals, 102(1-3), 1002 - 1003. https://doi.org/10.1016/S0379-6779(98)01184-9
van Hal, P. A., Langeveld-Voss, B. M. W., Peeters, E., Janssen, R. A. J., Hummelen, J. C., & Knol, J. (1999). Synthesis and photophysical properties of novel fullerene derivatives as model compunds for bulk-heterojunction PV cells. In Fullerenes. Volume 7: recent advances in the chemistry and physics of fullerenes and related materials (pp. 207 - 211). Pennington, NJ: The Electrochemical Society.
Sternfeld, T., Wudl, F., Hummelen, K., Weitz, A., Haddon, R. C., & Rabinovitz, M. (1999). 1H NMR of C61H26-: the aromatic character of C60 upon reduction—a view from the bridge of C61H2. Chemical Communications, (23), 2411-2412. https://doi.org/10.1039/A907604B

1998

Hummelen, K. (1998). Fullereenchemie onmisbaar voor 'plastic' zonnecellen. Default journal.
Knol, J., & Hummelen, J. C. (1998). Fullerene Derivatives as Components for ‘Plastic’ Photovoltaic Cells. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.
Hummelen, J. C., & Knol, J. (1998). Fullerene derivatives as components for 'plastic' photovoltaic cells. In KM. Kadish, & RS. Ruoff (Eds.), RECENT ADVANCES IN THE CHEMISTRY AND PHYSICS OF FULLERENES AND RELATED MATERIALS, VOL 6 (pp. 1123-1126). (ELECTROCHEMICAL SOCIETY SERIES; Vol. 98). PENNINGTON: The Electrochemical Society.
Knol, J., & Hummelen, J. C. (1998). Fullerenes and nanostructured plastic solar cells. In H. Kuzmany, J. Fink, M. Mehring, & S. Roth (Eds.), ELECTRONIC PROPERTIES OF NOVEL MATERIALS - PROGRESS IN MOLECULAR NANOSTRUCTURES (pp. 523-526). (AIP CONFERENCE PROCEEDINGS; Vol. 442). MELVILLE: University of Groningen, Stratingh Institute for Chemistry.
Brabec, C. J., Dyakonov, V., Sariciftci, N. S., Graupner, W., Leising, G., & Hummelen, J. C. (1998). Investigation of photoexcitations of conjugated polymer/fullerene composites embedded in conventional polymers. Journal of Chemical Physics, 109(3), 1185 - 1195. https://doi.org/10.1063/1.476664
Hummelen, J. C. (1998). Molecular Solar Cells. In EPRINTS-BOOK-TITLE (pp. 247). (STT-60). Den Haag: University of Groningen, Stratingh Institute for Chemistry.
McBranch, D. W., Mattes, B. R., Koskelo, A. C., Heeger, A. J., Robinson, J. M., Smilowitz, L. B., ... Hummelen, J. C. (1998). Optical Limiting Materials.
Miller, E. K., Lee, K., Hasharoni, K., Hummelen, J. C., Wudl, F., & Heeger, A. J. (1998). Photo-induced changes in the complex index of refraction in conjugated polymer/fullerene blends. Journal of Chemical Physics, 108(4), 1390 - 1394. https://doi.org/10.1063/1.475550
Brabec, C. J., Padinger, F., Dyakonov, V., Hummelen, J. C., Janssen, R. A. J., & Sariciftci, N. S. (1998). Realization of large area flexible fullerene-conjugated polymer photocells: a route to plastic solar cells. In Electronic properties of novel materials--progress in molecular nanostructures (pp. 519). World Scientific Publishing.
Hummelen, J. C., Keshavarz, K., van Dongen, J. L. J., Janssen, R. A. J., Meijer, E. W., Wudl, F., & Keshavarz-K, M. (1998). Resolution and circular dichroism of an asymmetrically cage- opened [60]fullerene derivative. Chemical Communications, 1(2), 281 - 282. https://doi.org/10.1039/a707274k
Dyakonov, V., Zoriniants, G., Scharber, M., Brabec, C. J., Janssen, R. A. J., Hummelen, J. C., & Sariciftci, N. S. (1998). Studies of photoinduced charge transfer in conjugated polymer-fullerene composites by light-induced ESR. In Electronic properties of novel materials--progress in molecular nanostructures (pp. 257). University of Groningen, Stratingh Institute for Chemistry.
Golden, M. S., Pichler, T., Knupfer, M., Friedlein, R., Haffner, S., Fink, J., ... Hummelen, J. C. (1998). The electronic strcuture of C59N and its AxC59N (A=K, Rb, Cs) salts from high-energy spectroscopy. In Electronic properties of novel materials--progress in molecular nanostructures (pp. 86). World Scientific Publishing.
Golden, M. S., Pichler, T., Knupfer, M., Friedlein, R., Haffner, S., Fink, J., ... Wudl, F. (1998). The Electronic Structure of C59N and Its AxC59N (A=K, Rb, Cs) Salts from High Energy Spectroscopy. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.
Haffner, S., Pichler, T., Knupfer, M., Umlauf, B., Friedlein, R., Golden, M. S., ... Wudl, F. (1998). The electronic structure of (C59N)(2) from high energy spectroscopy. European Physical Journal B, 1(1), 11 - 17.
Haffner, S., Pichler, T., Knupfer, M., Umlauf, B., Friedlein, R., Golden, M. S., ... Wudl, F. (1998). The electronic structure of (C59N)2 from high energy spectroscopy. The European Physical Journal B, 1(1). https://doi.org/10.1007/s100510050147

1997

Weener, JIW., vanDongen, JLJ., Hummelen, JC., & Meijer, EW. (1997). Fragmentation studies of poly(propylene imine) dendrimers in the gas-phase by using electrospray ionization mass spectrometry (ESI-MS). Abstracts of Papers of the American Chemical Society, 214, 133-PMSE.
Hummelen, J. C., Dongen, J. L. J. V., & Meijer, E. W. (1997). Electrospray mass spectrometry of poly(propylene imine) dendrimers - The issue of dendritic purity or polydispersity. Chemistry : a European Journal, 3(9), 1489 - 1493. https://doi.org/10.1002/chem.19970030916
BellaviaLund, C., KeshavarzK, M., Gonzalez, R., Hummelen, JC., Hicks, R., & Wudl, F. (1997). Heterocyclic and heteroatom derivatives of buckminsterfullerene C-60. Phosphorus Sulfur and Silicon and the Related Elements, 120, 107-119. https://doi.org/10.1080/10426509708545513
Lee, K. H., Miller, E. K., Sariciftci, N. S., Hummelen, J. C., Wudl, F., & Heeger, A. J. (1997). Infrared photoexcitation spectra of conducting polymer/methanofullerene films. Synthetic Metals, 84(1-3), 857 - 858. https://doi.org/10.1016/S0379-6779(96)04181-1
Bellavia-Lund, C., Hummelen, J. C., Keshavarz, K., Gonzalez, R., Wudl, F., & Keshavarz-K., M. (1997). New developments in the organic chemistry of fullerenes. Journal of Physics and Chemistry of Solids, 58(11), 1983 - 1990. https://doi.org/10.1016/S0022-3697(97)00097-8
Pichler, T., Knupfer, M., Golden, M. S., Haffner, S., Friedlein, R., Fink, J., ... Wudl, F. (1997). On-Ball Doping of Fullerenes: The Electronic Structure of C59N Dimers from Experiment and Theory. Physical Review Letters, 78(22), 4249-4252. https://doi.org/10.1103/PhysRevLett.78.4249
Bellavia-Lund, C., Gonzalez, R., Hummelen, J. C., Hicks, R. G., Sastre, A., & Wudl, F. (1997). Synthesis of C-59(CHPh(2))N from (C59N)(2) and C59HN. The first derivatization of C59N. Journal of the American Chemical Society, 119(12), 2946 - 2947. https://doi.org/10.1021/ja964447c
Pichler, T., Knupfer, M., Friedlein, R., Haffner, S., Umlauf, B., Golden, M. S., ... Keshavarz-K, M. (1997). The dielectric function of dimerised C59N. Synthetic Metals, 86(1-3), 2313 - 2314. https://doi.org/10.1016/S0379-6779(97)81140-X
Pichler, T., Knupfer, M., Golden, M. S., Fink, J., Winter, J., Haluska, M., ... Keshavarz-K, M. (1997). The electronic structure of polymerized fullerenes and dimerized heterofullerenes. Applied Physics A-Materials Science & Processing, 64(3), 301 - 305. https://doi.org/10.1007/s003390050482

1996

Andreoni, W., Curioni, A., Holczer, K., Prassides, K., KeshavarzK, M., Hummelen, JC., & Wudl, F. (1996). Unconventional bonding of azafullerenes: Theory and experiment. Journal of the American Chemical Society, 118(45), 11335-11336. https://doi.org/10.1021/ja962279i
Lee, K., Miller, EK., Sariciftci, NS., Hummelen, JC., Wudl, F., & Heeger, AJ. (1996). Photoinduced absorption and photoinduced reflectance in conducting polymer methanofullerene films: Nonlinear-optical changes in the complex index of refraction. Physical Review. B: Condensed Matter and Materials Physics, 54(15), 10525-10529. https://doi.org/10.1103/PhysRevB.54.10525
KeshavarzK, M., Gonzalez, R., Hicks, RG., Srdanov, G., Srdanov, G., Collins, TG., ... Holczer, K. (1996). Synthesis of hydroazafullerene C59HN, the parent hydroheterofullerene. Nature, 383(6596), 147-150. https://doi.org/10.1038/383147a0
Prassides, K., KeshavarzK, M., Hummelen, JC., Andreoni, W., Giannozzi, P., Beer, E., ... Wudl, F. (1996). Isolation, structure, and electronic calculations of the heterofullerene salt K6C59N. Science, 271(5257), 1833-1835. https://doi.org/10.1126/science.271.5257.1833
Kraabel, B., Hummelen, J. C., Vacar, D., Moses, D., Sariciftci, N. S., Heeger, A. J., & Wudl, F. (1996). Subpicosecond photoinduced electron transfer from conjugated polymers to functionalized fullerenes. Journal of Chemical Physics, 104(11), 4267 - 4273. https://doi.org/10.1063/1.471154
Wudl, F., Bellavia-Lund, C., Collins, T., Gonzalez, N., Hicks, R. G., Hummelen, J. C., ... Srdanov, V. I. (1996). Buckyball,s holeyballs and dopeyballs. In Proceedings Robert Welsch Foundation Conference on Chemical Research (pp. 131 - 138)
Wudl, F., Hummelen, J. C., & Srdanov, V. (1996). Chemistry and Physics of Fulleroids and Methanofullerenes. In NATO Advanced Study Institute Series. Series E, Applied Sciences 316 (pp. 257 - 266). (NATO Advanced Study Institute Series. Series E, Applied Sciences 316). University of Groningen, Stratingh Institute for Chemistry.
Lee, K., Miller, E. K., Sariciftci, N. S., Hummelen, J. C., Wudl, F., & Heeger, A. J. (1996). Nonlinear optical changes in the complex index of refraction in conducting polymer-methanofullerene films evaluated by photoexcitation spectroscopy. In Host Publication (Vol. 2854, pp. 199 - 207)

1995

Janssen, R. A. J., Hummelen, J. C., Lee, K., Pakbaz, K., Sariciftci, N. S., Heeger, A. J., & Wudl, F. (1995). Photoinduced electron-transfer from pi-conjugated polymers onto buckminsterfullerene, fulleroids, and methanofullerenes. The Journal of Chemical Physics, 103(2), 788-793. https://doi.org/10.1063/1.470110
RAVAINE, S., LEPECQ, F., MINGOTAUD, C., DELHAES, P., HUMMELEN, JC., WUDL, F., & PATTERSON, LK. (1995). SYNTHESIS, PHYSICAL CHARACTERIZATIONS, AND LANGMUIR FILMS OF NEW METHANOFULLERENES. The Journal of Physical Chemistry, 99(23), 9551-9557. https://doi.org/10.1021/j100023a037
GONZALEZ, R., HUMMELEN, JC., & WUDL, F. (1995). THE SPECIFIC ACID-CATALYZED AND PHOTOCHEMICAL ISOMERIZATION OF A ROBUST FULLEROID TO A METHANOFULLERENE. Journal of Organic Chemistry, 60(8), 2618-2620. https://doi.org/10.1021/jo00113a049
HUMMELEN, JC., KNIGHT, BW., LEPEQ, F., WUDL, F., YAO, J., & WILKINS, CL. (1995). PREPARATION AND CHARACTERIZATION OF FULLEROID AND METHANOFULLERENE DERIVATIVES. Journal of Organic Chemistry, 60(3), 532-538. https://doi.org/10.1021/jo00108a012
Janssen, R. A. J., Christiaans, M. P. T., Pakbaz, K., Moses, D., Hummelen, J. C., & Sariciftci, N. S. (1995). Photoinduced electron transfer processes in oligothiophene/C60 composite films. The Journal of Chemical Physics, 102(6), 2628-2635. https://doi.org/10.1063/1.468694
Cha, M., Sariciftci, N. S., Heeger, A. J., Hummelen, J. C., & Wudl, F. (1995). Enhanced nonlinear absorption and optical limiting in semiconducting polymer methanofullerene charge transfer films. Applied Physics Letters, 67(26), 3850 - 3852. https://doi.org/10.1063/1.115294
Hummelen, J. C., Knight, B. W., Pavlovich, J., Gonzalez, R., & Wudl, F. (1995). Isolation of the heterofullerene C59N as its dimer (C59N)(2). Science, 269(5230), 1554 - 1556. https://doi.org/10.1126/science.269.5230.1554
McBranch, D., Smilowitz, L., Klimov, V., Koskelo, A., Robinson, J. M., Mattes, B. R., ... Borrelli, N. F. (1995). Optical limiting and excited-state absorption in fullerene solutions and doped glasses. In Host Publication (Vol. 2530, pp. 196 - 204)
Janssen, R. A. J., Hummelen, J. C., & Wudl, F. (1995). Photochemical fulleroid to methanofullerene conversion via the di-pi-methane (Zimmerman) rearrangement. Journal of the American Chemical Society, 117(1), 544 - 545. https://doi.org/10.1021/ja00106a068
Yu, G., Hummelen, J. C., Wudl, F., & Heeger, A. J. (1995). Polymer photovoltaic cells - enhanced efficiencies via a network of internal donor-acceptor heterojunctions: Enhanced Efficiencies via a Network of Internal Donor-Acceptor Heterojunctions. Science, 270(5243), 1789 - 1791. https://doi.org/10.1126/science.270.5243.1789
Hummelen, J. C., Prato, M., & Wudl, F. (1995). There is a hole in my bucky. Journal of the American Chemical Society, 117(26), 7003 - 7004. https://doi.org/10.1021/ja00131a024

1994

Schinazi, R. F., McMillan, A., Juodawlkis, A. S., Pharr, J., Sijbesma, R., Srdanov, G., ... Wudl, F. (1994). Anti-Human Immunodeficiency Virus, Toxicity in Cell Culture, and Tolerance in Mammals of a Water-Soluble Fullerene. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.
Wudl, F., Hummelen, J-K., Janssen, R., & Coldren, C. (1994). Properties of Synthetic Derivatives of Buckminsterfullerene in Composites with Conducting Polymers. In International Conference on Science and Technology of Synthetic Metals, 1994. ICSM '94 (pp. 6-6). University of Groningen, Stratingh Institute for Chemistry.

1992

Hummelen, J. C. (1992). Inrichting en werkwijze voor de scheiding van mengsels van chemische substanties.

1991

Ensing, J., & Hummelen, J. C. (1991). Isolation, Identification, and Origin of Three Previously Unknown Congeners in Illicit Cocaine. Journal of forensic sciences, 36(6), 1666-1687.
Hummelen, J. C., Luider, T. M., Oudman, D., & Wynberg, H. (1991). 1,2-Dioxetanes: Luminescent and Nonluminescent Decomposition, Chemistry, and Potential Applications. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.

1990

Hummelen, J. C., & Wynberg, H. (1990). Chemiluminescent Labeled Organic Reagents and Their Use in Analysis of Organic Compounds.
Luider, T. M., Hummelen, J. C., Oudman, D., & Wynberg, H. (1990). Thermochemiluminescence Immunoassay for hCG. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.
Luider, T. M., Hummelen, J. C., Koek, J. N., & Wynberg, H. (1990). Thermochemiluminescent Cyclodextrin Complexes.

1989

Kraan, G. P. B., Drayer, N. M., Kruizinga, W. H., Vaalburg, W., & Hummelen, J. C. (1989). Synthesis and Physicochemical Properties of [19,20-13C]-17α-Ethinylestradiol. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.

1988

Hummelen, J. C., Luider, T., & Wynberg, H. (1988). Solid Phase Immunoassay Using Immunoreagents Immobilized on Inert Synthetic Resin Surfaces.
Hummelen, J. C., Luider, T. M., & Wynberg, H. (1988). Thermochemiluminescence immunoassay. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.
Brouwer, A. C., Hummelen, J. C., Luider, T., van Bolhuis, F., & Wijnberg, H. (1988). Xanthenylideneadamantane 1,2-Dioxetane: Preparation, Properties and Its Potential Use as an Inherently Thermochemiluminescent Label. Tetrahedron Letters, 29(25), 3137-3140. https://doi.org/10.1016/0040-4039(88)85106-2

1987

Hummelen, J. C., Luider, T., & Wijnberg, H. (1987). Functionalized adamantylideneadamantane 1,2-dioxetanes: investigations on stable and inherently chemiluminescent compounds as a tool for clinical analysis. Pure and Applied Chemistry, 59(5), 639-650. https://doi.org/10.1351/pac198759050639
Hummelen, J. C., Meijer, E. W., & Wynberg, H. (1987). Polycycloalkylidene-Polycycloalkanes, Epidioxy Derivatives Thereof and Method of Preparation.

1986

HUMMELEN, JC., LUIDER, TM., & WYNBERG, H. (1986). STABLE 1,2-DIOXETANES AS LABELS FOR THERMOCHEMILUMINESCENT IMMUNOASSAY. Methods in Enzymology, 133, 531-557.
Hummelen, J. C., Luider, T. M., & Wynberg, H. (1986). Stable 1,2-Dioxetanes as Labels for Thermochemiluminescent Immunoassay. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.

1985

Hummelen, J. C. (1985). Inherently chemiluminescent compounds as new labels in clinical analysis. s.n.

1981

Wynberg, H., Meijer, E. W., Hummelen, J. C., Dekkers, H. P. J. M., Schippers, P. H., & Carlson, A. D. (1981). Circular Polarization Observed in Bioluminescence. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.
Wynberg, H., Meijer, E. W., & Hummelen, J. C. (1981). 1,2-Dioxetanes as Chemiluminescent Probes and Labels. In EPRINTS-BOOK-TITLE University of Groningen, Stratingh Institute for Chemistry.

1980

Wijnberg, H., Meijer, E. W., Hummelen, J. C., Dekkers, H. P. J. M., Schippers, P. H., & Carlson, A. D. (1980). Circular polarization observed in bioluminescence. Nature, 286(5773). https://doi.org/10.1038/286641a0
WYNBERG, H., MEIJER, EW., HUMMELEN, JC., DEKKERS, HPJM., SCHIPPERS, PH., & CARLSON, AD. (1980). Circular polarization observed in bioluminescence. Nature, 286(5773), 641-642.

1978

HUMMELEN, JC., & WYNBERG, H. (1978). ALKALOID ASSISTED ASYMMETRIC SYNTHESIS .4. ADDITIONAL ROUTES TO CHIRAL EPOXIDES. Tetrahedron Letters, 19(12), 1089-1092. https://doi.org/10.1016/S0040-4039(01)85459-9

1976

HELDER, R., HUMMELEN, JC., LAANE, RWPM., WIERING, JS., & WYNBERG, H. (1976). CATALYTIC ASYMMETRIC INDUCTION IN OXIDATION REACTIONS - SYNTHESIS OF OPTICALLY-ACTIVE EPOXIDES. Tetrahedron Letters, 17(21), 1831-1834. https://doi.org/10.1016/S0040-4039(00)93796-1
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