Far infrared absorption of a-GeSe |
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Authors: | HJ Trodahl |
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Institution: | Physics Department, Victoria University, Wellington, New Zealand |
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Abstract: | Far infrared absorption measurements have been made on a series of a-GexSe1?x films with near equiatomic compositions. The only sharp feature is an absorption line at 260cm-1, and the compositional dependance of this feature is correctly described by a model in which the Ge(Se) atoms are 4(2) fold co-ordinated. There is no evidence in our amorphous samples of any absorption band in the frequency range (160?190cm?1) of the major IR active modes of 3:3 fold co-ordinated crystalline GeSe. |
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