| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10631318 | Journal of Non-Crystalline Solids | 2005 | 5 Pages |
Abstract
Amorphous thin films from the system As2Se3-Ag4SSe-SnTe were prepared by thermal vacuum evaporation from the corresponding bulk glassy samples. The film structure and surface morphology were investigated by scanning electron microscopy and atomic force microscopy; the results revealed uniform, smooth and homogeneous coatings. The amorphous chalcogenide films are transparent in a wide spectral range as shown by transmission and reflection measurements in the VIS and NIR regions. The optical band gap was determined and its compositional dependence is discussed in terms of structural considerations and the formation of charged defect centers.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
V. Vassilev, S. Boycheva, C. Popov, P. Petkov, L. Aljihmani, B. Monchev, K. Kolev,