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Temperature dependence of the optical energy gap and Urbach’s energy of CuIn5Se8

✍ Scribed by Rincon, C.; Wasim, S. M.; Marı n, G.; Marquez, R.; Nieves, L.; Perez, G. Sanchez; Medina, E.


Book ID
118130706
Publisher
American Institute of Physics
Year
2001
Tongue
English
Weight
342 KB
Volume
90
Category
Article
ISSN
0021-8979

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## 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 10–300 K. The logarithmic variation of the absorption coefficient with photon energy observed in both compounds just below the fundamental abs