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IJPAP Vol.44(06) [June 2006] >


Title: Study of optical absorption and optical band gap determination of thin amorphous TeO2-V2O5-MoO3 blown films
Authors: Elahi, Mohammad
Souri, Dariush
Keywords: Optical absorption
Thin amorphous blown films
Optical band gap
Issue Date: Jun-2006
Publisher: CSIR
IPC CodeG01J3/28
Abstract: The optical absorption coefficient of amorphous 40TeO2-(60-x) V2O5-xMoO3 thin films was determined in a spectral range 190-1100 nm at room temperature. The fundamental optical absorption edge was sharp. The optical gap generally increases as the proportion of MoO3 in the mixed films increases. The width of the tail of the localized states in the band gap was determined for different compositions, which is because of the lack of long range order. The results of the usual density-of-state models of amorphous materials are presented in this paper.
Page(s): 468-472
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.44(06) [June 2006]

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