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Proceedings Paper

Influence of the device architecture to the ITO surface treatment effects on organic solar cell performance
Author(s): Chung Yin Kwong; Aleksandra B. Djurisic; Po Ching Chui; Wai Kin Chan
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Paper Abstract

In this work, we investigate the influence of different indium tin oxide (ITO) surface treatments on the performance of organic solar cells with different device architectures. Two layer cells with different layer hierarchy (ITO/copper phthalocyanine (CuPc)/fullerene (C60)/Al and ITO/C60/CuPc/Cu) and three layer cells with mixed layer inserted between CuPc and C60 were fabricated. We found that in all cases the short circuit current was the parameter which was most significantly affected by ITO surface treatment. However, the performance of the cells with C60 layer in contact with ITO was markedly less sensitive to the ITO surface treatments compared to the cells with CuPc in contact with ITO. The cells with C60 layer in contact with ITO also exhibited higher efficiency compared to the cells with CuPc in contact with ITO. We also fabricated two layer cells with structures ITO/CuPc/ perylene tetracarboxylic acid diimide (PTCDI)/Al and ITO/PTCDI/CuPc/Cu. In this case, we also obtain higher efficiency and lower sensitivity to ITO properties when “n type” material is in contact with ITO. The best obtained AM1 power conversion efficiency was 0.4% for ITO/PTCDI/CuPc/Cu cell and ITO/C60/CuPc:C60/CuPc/Cu cells.

Paper Details

Date Published: 6 February 2004
PDF: 8 pages
Proc. SPIE 5215, Organic Photovoltaics IV, (6 February 2004); doi: 10.1117/12.502907
Show Author Affiliations
Chung Yin Kwong, Univ. of Hong Kong (China)
Aleksandra B. Djurisic, Univ. of Hong Kong (China)
Po Ching Chui, Univ. of Hong Kong (China)
Wai Kin Chan, Univ. of Hong Kong (China)

Published in SPIE Proceedings Vol. 5215:
Organic Photovoltaics IV
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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