Characterization of organic photovoltaic devices with indium-tin-oxide anode treated by plasma in various gases

• DOI: 10.1063/1.2372574
• Publication Date: 2006-11-09T23:01:27Z
• Authors: Z. R. Hong; C. J. Liang; X. Y. Sun; X. T. Zeng
• Keywords: Indium tin oxide; Open-circuit voltage

Indium-tin-oxide (ITO) anode treated by different gas plasma or UV ozone has been used for photovoltaic (PV) cells with structure of ITO/copper phthalocyanine (CuPc)/C60/bathocuproine/Al. Both surface energy and work function the ITO substrates were affected these treatments. However, main performance parameters PV cells, including short circuit current, open voltage, power conversion efficiency, fill factor, almost unaffected. On other hand, series shunt resistances derived from numerical fitting I-V curves not significantly changed Therefore, no significant impact substrate treatment on hole collection was concluded, although injection under forward bias showed strong dependence methods. It indicates that transfer CuPc layer to is bottleneck in CuPc/C60 based organic solar cells.