## Abstract Optical absorption spectra of CuIn~5~Se~8~ and CuGa~3~Se~5~ single crystals grown by chemical vapour transport were investigated in the range of 10β300 K. The logarithmic variation of the absorption coefficient with photon energy observed in both compounds just below the fundamental abs
Growth, transmission spectra, and thermal expansion of CuGa3Se5single crystals
β Scribed by I. V. Bodnar
- Book ID
- 110166125
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 2008
- Tongue
- English
- Weight
- 171 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0020-1685
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π SIMILAR VOLUMES
## Abstract The ellipsometric spectra of CuIn~3~Se~5~, CuGa~3~Se~5~ and CuGa~5~Se~8~ ordered vacancy compounds (OVC) have been studied in the spectral range from 0.8 to 4.4 eV. The structures observed in the measured spectra were analyzed by fitting the second derivative of the experimental spectru
## Abstract Optical absorption spectra of CuIn~5~Se~8~ and CuGa~3~Se~5~ single crystals have been investigated. The energy gap __E__ ~g~ for CuIn~5~Se~8~ (CuGa~3~Se~5~) was found to be varied from 1.27 (1.79) to 1.21 (1.71) eV in the temperature range between 10 and 300 K. The temperature dependenc