A partially stabilized photoeletrochemical cell using hydrogenated amorphous silicon photoanodes coated with thin films of polypyrrole
- 1 February 1982
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 40 (3), 281-283
- https://doi.org/10.1063/1.93039
Abstract
Electrochemical Schottky barrier devices with polypyrrole coated hydrogenated amorphous silicon, (a-Si:H), as photoanodes and a variety of aqueous redox solutions have been investigated. The open circuit voltage reaches 0.63 V for most anodic redox couples and exhibits a high degree of surface pinning due to the barrier formed between a-Si:H and the highly conductive polypyrrole. We report a substantial improvement in the stability of the polypyrrole coated electrodes compared with the bare a-Si:H. The efficiency of the present devices is limited by low photocurrent and fill factor.Keywords
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