CuInSe/sub 2/-based photoelectrochemical cells: their use in characterization of thin CuInSe/sub 2/ films, and as photovoltaic cells per se
Photoelectrochemistry has been employed to characterize the p-CuInSe/sub 2/ component of the CdS/CuInSe/sub 2/ on-metal and a nonaqueous electrolyte containing a redox couple not specifically adsorbed onto the semiconductor, we can test the films for photovoltaic activity and obtain effective electronic properties of them, before CdS deposition, in a nondestructive manner. Electrochemical decomposition of CuInSe/sub 2/ was investigated in acetonitrile solutions to determine the mechanism of decomposition (n and p) in the dark and under illumination. Electrochemical, solution chemical and surface analyses confirmed at the light-assisted decomposition of CuInSe/sub 2/ resulted in metal ions and elemental chalcogen. On the basis of the results from the electrochemical decomposition, and studies on the solid state chemistry of the (Cu/sub 2/Se)/sub x/(In/sub 2/Se/sub 3/)/sub 1-x/ system and surface analyses, the CuInSe/sub 2//polyiodide interface was stabilized and up to 11.7% conversion efficiencies were obtained.
- Research Organization:
- Solar Energy Research Inst., Golden, CO (USA); Universidad de Los Andes, Merida (Venezuela). Dept. de Fisica; North Carolina State Univ., Raleigh (USA). Dept. of Chemistry
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 6897874
- Report Number(s):
- SERI/TP-212-2329; CONF-840561-16; ON: DE84004514
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140501 -- Solar Energy Conversion-- Photovoltaic Conversion
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CADMIUM SULFIDE SOLAR CELLS
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