OPTICAL-PROPERTIES OF DILUTE HYDROGEN TUNGSTEN BRONZE THIN-FILMS

被引：63
作者：
GREEN, M
HUSSAIN, Z
机构：
[1] Imperial College of Science Technology and Medicine, Department of Electrical Engineering, London SW7 2BT, Exhibition Road
来源：
JOURNAL OF APPLIED PHYSICS | 1991年 / 69卷 / 11期
关键词：
D O I：
10.1063/1.347506
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Transmission and reflection spectra in the range of 0.5-4.1 eV have been obtained for H(x)WO3 polycrystalline thin films of 5-nm mean grain size. The composition range x = 0-0.16 has been investigated. The measurements were refined to give the absorption coefficient and other optical parameters versus photon energy. The data have been interpreted in terms of the interband transition model due to Green and Travlos [Philos. Mag. B 51, 501 (1985)]. It is noted that main gap changes because of changes in crystal structure, and there is a sensitivity of the main gap value to grain size which may have its origins in quantum confinement effects.
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页码：7788 / 7796
页数：9
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