Abstract

Mehran Riazian* and Shima Daliri Rad

Optical absorption of amorphous V2O5-Bi2O3 thin film prepared by thermal evaporation technique has been studied in the wave length rang 200 to 800 nm. It is found that the fundamental optical absorption edge rather sharp as in crystalline materials. It is also found that the optical energy gap EOPT is about 4.07 eV and the mechanism of transition is direct forbidden transition.

OPT absorption; vanadat-Bismuth; thin films

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