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/ photovoltaic cell. Using the junction between CuInSe/sub 2/ on-metal and a nonaqueous electrolyte containing a redox couple not specifically adsorbed onto the semiconductor, one 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 Institute, Golden, CO
- OSTI ID:
- 6024437
- Report Number(s):
- CONF-840561-
- Journal Information:
- Conf. Rec. IEEE Photovoltaic Spec. Conf.; (United States), Journal Name: Conf. Rec. IEEE Photovoltaic Spec. Conf.; (United States); ISSN CRCND
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140501 -- Solar Energy Conversion-- Photovoltaic Conversion
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL REACTION KINETICS
CHEMISTRY
COPPER COMPOUNDS
COPPER SELENIDES
DEPOSITION
EFFICIENCY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROCHEMICAL COATING
ELECTROCHEMISTRY
ELECTROLYTES
ELECTROMAGNETIC RADIATION
EQUIPMENT
FILMS
INDIUM COMPOUNDS
INDIUM SELENIDES
JUNCTIONS
KINETICS
MATERIALS
P-N JUNCTIONS
P-TYPE CONDUCTORS
PHOTOELECTROCHEMICAL CELLS
PHOTOELECTROMAGNETIC EFFECTS
PHOTOVOLTAIC EFFECT
PHYSICAL PROPERTIES
PHYSICS
RADIATIONS
REACTION KINETICS
SELENIDES
SELENIUM COMPOUNDS
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR MATERIALS
SOLAR EQUIPMENT
SOLID ELECTROLYTES
SOLID STATE PHYSICS
SURFACE COATING
SURFACE PROPERTIES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
VISIBLE RADIATION