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Crystal Research and Technology |
Cryst. Res. Technol. 41, 474 (2006) - Abstract -
Substrate temperature effect on the optical properties of amorphous Sb2S3 thin films
N. Tigau
Faculty of Science, Dunarea de Jos University, Galati 6200, Romania
| Keywords | antimony trisulfide, thin films, optical properties |
| PACS | 78.20.Ci, 81.05. Hd, 81.15.Ef |
| DOI | 10.1002/crat.200510608 |
Sb2S3 amorphous thin films were prepared by thermal evaporation of corresponding powder on thoroughly cleaned glass substrates held at temperature in the range 300-473 K. X-ray diffraction and atomic force microscopy have been used to order to identify the structure and morphology of surface thin films. The optical constants of the deposition films were obtained from the analysis of the experimental recorded transmission data over the wavelength range 400-1400 nm. An analysis of the absorption coefficient values revealed an optical indirect transition with the estimation of the corresponding band gap values. It was found that the optical band gap energy decrease with substrate temperature from 1.67 eV at 300 K to 1.48 eV at 473K.
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