Comparative studies on solar cell structures using zinc phthalocyanine and fullerenes

M. Egginger; R. Koeppe; F. Meghdadi; P. A. Troshin; R. N. Lyubovskaya; D. Meissner; N. S. Sariciftci

doi:10.1117/12.662909

26 April 2006 Comparative studies on solar cell structures using zinc phthalocyanine and fullerenes

M. Egginger, R. Koeppe, F. Meghdadi, P. A. Troshin, R. N. Lyubovskaya, D. Meissner, N. S. Sariciftci

Proceedings Volume 6192, Organic Optoelectronics and Photonics II; 61921Y (2006) https://doi.org/10.1117/12.662909
Event: SPIE Photonics Europe, 2006, Strasbourg, France

Abstract

We compare different structures of organic solar cells based on zinc phthalocyanine (ZnPc) and fullerene derivatives as electron donor and acceptor materials, respectively. Bilayer devices are fabricated and characterized by current-voltage and spectrally resolved photocurrent measurements. In a novel approach, the ZnPc was combined with soluble fullerene derivatives. With a pyrrolidinofullerene bearing chelating pyrridyl-groups we observed a complexation between donor and acceptor molecules. Due to a favorable structuring of the donor-acceptor interface this leads to a significant enhancement of the solar cell performance compared to similar devices where no complexation takes place. Coevaporated bulk heterojunction mixed-layers are introduced between the pristine layers. In these optimized structures short circuit currents up to 13 mA/cm² are observed. We investigate the voltage dependence of the spectrally resolved photocurrent of ZnPc / Buckminsterfullerene bilayer solar cells and interpret the results in terms of the Gartner model.

Citation Download Citation

M. Egginger, R. Koeppe, F. Meghdadi, P. A. Troshin, R. N. Lyubovskaya, D. Meissner, and N. S. Sariciftci "Comparative studies on solar cell structures using zinc phthalocyanine and fullerenes", Proc. SPIE 6192, Organic Optoelectronics and Photonics II, 61921Y (26 April 2006); https://doi.org/10.1117/12.662909

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