Optical and photoconductive characteristics of CuIn/sub y/Ga/sub 1-y/Se/sub 2/ and Cu/sub x/Ag/sub 1-x/InSe/sub 2/
Technical Report
·
OSTI ID:6980788
Optical and photoconductivity measurements were carried out to determine the composition dependence of the band gap of the solid solutions in CuIn/sub y/Ga/sub 1-y/InSe/sub 2/ and Cu/sub x/Ag/sub 1-x/InSe/sub 2/. The near-infrared absorption was measured and an exponential fit observed. The near-infrared spectral photoconductive response was also measured at 300 K and, for some samples, at 77 K. Variations in photoconductivity with temperature were also observed. The band-gap variation was estimated and bowing parameters of 0.161 and 0.305 calculated for the gallium and silver series, respectively. One or more shallow acceptor levels have been observed at a depth varying from 160 MeV for high-gallium samples to 10 MeV for high-silver samples. Thermal quenching was also observed and a donor level conjectured in high-silver samples.
- Research Organization:
- Solar Energy Research Inst., Golden, CO (USA)
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 6980788
- Report Number(s):
- SERI/RR-212-3064; ON: DE87001138
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
ABSORPTION SPECTRA
COPPER SELENIDE SOLAR CELLS
DIRECT ENERGY CONVERTERS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY GAP
EQUIPMENT
OPTICAL PROPERTIES
PHOTOCONDUCTIVITY
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
SOLAR CELLS
SOLAR EQUIPMENT
SPECTRA
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
ABSORPTION SPECTRA
COPPER SELENIDE SOLAR CELLS
DIRECT ENERGY CONVERTERS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY GAP
EQUIPMENT
OPTICAL PROPERTIES
PHOTOCONDUCTIVITY
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
SOLAR CELLS
SOLAR EQUIPMENT
SPECTRA