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Photoluminescence and Raman spectra of the ordered vacancy compound CuGa5Se8

✍ Scribed by M. Grossberg; J. Krustok; I. Bodnar; S. Siebentritt; J. Albert

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
192 KB
Volume
403
Category
Article
ISSN
0921-4526

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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