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Enhancing Quantum Dot Solar Cells Stability with a Semiconducting Single-Walled Carbon Nanotubes Interlayer Below the Top Anode

Salazar-Rios, J. M., Sukharevska, N., Speirs, M. J., Jung, S., Dirin, D., Dragoman, R. M., Allard, S., Kovalenko, M. V., Scherf, U. & Loi, M. A., 23-Nov-2018, In : Advanced Materials Interfaces. 5, 22, 6 p., 1801155.

Research output: Contribution to journalArticleAcademicpeer-review

Semiconducting single-walled carbon nanotubes (s-SWNTs) are used as a protective interlayer between the lead sulfide colloidal quantum dot (PbS CQD) active layer and the anode of the solar cells (SCs). The introduction of the carbon nanotubes leads to increased device stability, with 85% of the initial performance retained after 100 h exposure to simulated solar light in ambient condition. This is in sharp contrast with the behavior of the device without s-SWNTs, for which the photoconversion efficiency, the open circuit voltage, the short-circuit current, and the fill factor all experiencing a sharp decrease. Therefore, the inclusion of s-SWNT as interlayer in CQD SCs, give rise to SCs of identical efficiency (above 8.5%) and prevents their performance degradation.

Original languageEnglish
Article number1801155
Number of pages6
JournalAdvanced Materials Interfaces
Volume5
Issue number22
Publication statusPublished - 23-Nov-2018

    Keywords

  • interlayer, quantum dots, single-walled carbon nanotubes, solar cells, PBS, TEMPERATURE, EXCHANGE, INKS

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