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Title
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Temperature dependence of the optical gap in thin amorphous films of , and other basic non-crystalline chalcogenides
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Author
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Abstract
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| Optical transmittivity in the UV-VIS region of thermally evaporated amorphous As2S3, and As2Se3 thin films was measured in the temperature region 15 K < T less than or equal to 300 K. The temperature dependence of the optical gap (E-g(T)) was found to be in agreement with Fan's one-phonon approximation or with Cody's one-oscillator model. The parameters necessary to describe the E-g(T) dependences for non-crystalline Se, As2S3, As2Se3, GeS2 and GeSe2, according to a simple linear relation, Varshni's relation, and Fan's or Cody's model are summarized. (C) 2000 Elsevier Science Ltd. All rights reserved. |
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Language
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English
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Source (journal)
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The journal of physics and chemistry of solids. - New York, N.Y.
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Publication
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New York, N.Y.
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2000
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ISSN
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0022-3697
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DOI
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10.1016/S0022-3697(99)00249-8
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Volume/pages
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61
:4
(2000)
, p. 545-550
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ISI
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000085842100008
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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