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Lecture Thuc-Quyen Nguyen

Rooster

WanneerWaar
12 januari 2012 FWN-Building 5118.-156, Nijenborgh 4, 9747 AG, Groningen
Speaker: Prof. Dr. Thuc-Quyen Nguyen
Affiliation: Center for Polymers and Organic Solids and Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, USA
Title: Organic solar cells research at UCSB: Molecular design, processing, characterization, and performace
Date: Thu Jan 12, 2012
Start: 14.30
Location: FWN-Building 5118.-156
Host: Maria A. Loi
Telephone: +31 50 363 4119

Abstract

The development of alternative energy sources is now recognized by government, society and the global community as an urgent need. Solution-processed organic solar cells potentially offer low cost, large area, flexible, and light-weight alternative energy sources. In these devices, the efficiency depends on the spatial distribution of molecular components at the nanoscale. In this talk, I will discuss our group effort on probing film morphology, phase separation, and charge generation in bulk heterojunction solar cells using scanning probe microscopy. Then, I will discuss the discovery of additive processing and recent progress at UCSB on solution processed molecular donor materials. The molecular design is based on donor/acceptor/donor or acceptor/donor/acceptor core with the endcapping units using common building blocks such as oligothiophenes, dithieno silole (DTS), pyridal thiadiazole (PT), diketopyrrolopyrrole (DPP), etc. Functional groups attached to the conjugated core can be used to tune the energy level, bandgap, solubility, molecular packing, the film morphology, charge mobility, and hence, device performance. A series of compounds has been synthesized to establish structure-function-property relationships. From an overall perspective, these studies tackle fundamental critical problems associated with emerging organic semiconductor based technologies that generate energy.

Laatst gewijzigd:22 oktober 2012 14:31