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Improvement of Photovoltaic Performance in Copper Phthalocyanine Binder Layer Solar Cells

Schottky barrier solar cells consisting of a semitransparent indium electrode and a copper phthalocyanine binder layer were prepared by vacuum deposition and spin coating, respectively. The influence of chloranil doping on their photovoltaic performance was studied. The undoped solar cell showed moderate photovoltaic performance. Chloranil doping increased the current in the cell, but decreased the open circuit voltage drastically, which was consistent with deterioration of the rectifying characteristic of the Schottky barrier cell. It was confirmed that photovoltaic performance could be approximately doubled by modifying the cell structure.