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The composition dependence of the optical band gap in Ge–Se–In thin films

✍ Scribed by G. Saffarini; J.M. Saiter; H. Schmitt


Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
160 KB
Volume
29
Category
Article
ISSN
0925-3467

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The optical properties of as-deposited Ge x Se 92Àx In 8 (x ¼ 10, 12.5, 15 and 20 at%) have been studied. Various optical constants have been calculated for the studied compositions. The mechanism of the optical absorption follows the rule of non-direct transition. It was found that, the optical ene