PREPARATION AND OPTICAL STUDIES ON FLASH EVAPORATED SB2S3 THIN-FILMS

Authors
MAHANTY S MERINO JM LEON M
Citation
S. Mahanty et al., PREPARATION AND OPTICAL STUDIES ON FLASH EVAPORATED SB2S3 THIN-FILMS, Journal of vacuum science & technology. A. Vacuum, surfaces, and films, 15(6), 1997, pp. 3060-3064
Citations number
22
Categorie Soggetti
Physics, Applied","Materials Science, Coatings & Films
Journal title
Journal of vacuum science & technology. A. Vacuum, surfaces, and films → ACNP
ISSN journal
07342101
Volume
15
Issue
6
Year of publication
1997
Pages
3060 - 3064
Database
ISI
SICI code
0734-2101(1997)15:6<3060:PAOSOF>2.0.ZU;2-T
Abstract
Thin films of Sb2S3 were prepared by flash evaporation. As-deposited f ilms were found to be amorphous and highly resistive (R>10(6) Ohm) in nature. An amorphous-crystalline phase transition occurs at 498 K on s ubsequent annealing in nitrogen atmosphere. The fundamental optical tr ansition is direct in nature and the optical band gaps (E-g) lie in th e region 1.70-2.07 and 1.42-1.65 eV for amorphous and crystalline film s, respectively. A near-linear decrease in E-g with decreasing S/Sb ra tio was observed suggesting the dependence of the band gap on film com position. (C) 1997 American Vacuum Society. [S0734-2101(97)03306-X].