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Proceedings Paper

Efficient organic photovoltaic cells using 2-(4-biphenylyl)-5-phenyl-1,3,4-oxadiazole as an exciton blocking layer
Author(s): Wei Zhang; Junsheng Yu; Nana Wang; Chunhua Huang; Yadong Jiang
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Paper Abstract

By using 2-(4-biphenylyl)-5-phenyl-1,3,4-oxadiazole (PBD) as an exciton blocking layer (EBL) at the organic/cathode interface of conventional copper phthalocyanine/fullerene (CuPc/C60) organic phtovoltaic (OPV) cells, a more efficient OPV cell was fabricated. The electrical characteristics of OPV cells with and without PBD as an exciton blocking layer were studied. The results showed that the power conversion efficiency (η) was increased from 0.7% to 1.58%. Also, the dependency of the power conversion efficiency on the absorption spectra of exciton blocking layer (PBD) in OPV cells was investigated, and it showed that the inserted PBD has almost no effect on the visible light absorption of the OPV cell. Hence, the improved photovoltaic performance is ascribed to a more efficient charge carrier transport balance, leading to more effective exciton separation.

Paper Details

Date Published: 22 October 2010
PDF: 5 pages
Proc. SPIE 7658, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, 76583U (22 October 2010); doi: 10.1117/12.866815
Show Author Affiliations
Wei Zhang, Univ. of Electronic Science and Technology of China (China)
Junsheng Yu, Univ. of Electronic Science and Technology of China (China)
Nana Wang, Univ. of Electronic Science and Technology of China (China)
Chunhua Huang, Univ. of Electronic Science and Technology of China (China)
Yadong Jiang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 7658:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology
Yadong Jiang; Bernard Kippelen; Junsheng Yu, Editor(s)

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