Study of the sub-bandgap absorption and the optical transitions in CuInSe2 polycrystalline thin films
SOLAR ENERGY MATERIALS AND SOLAR CELLS, vol.52, pp.183-195, 1998 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 52
- Publication Date: 1998
- Doi Number: 10.1016/s0927-0248(97)00287-0
- Journal Name: SOLAR ENERGY MATERIALS AND SOLAR CELLS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.183-195
- Keywords: optical transitions, CuInSe2, absorption coefficient, photon energy
- Dokuz Eylül University Affiliated: No
Abstract
Optical transitions near the fundamental band edge are studied for CuInSe2 films having various Cu/In ratios by analysing the variations of the absorption coefficient with incident photon energy. The results indicate different transitions depending upon the Cu/In ratio. There are sub-bandgap absorption for near stoichiometric and Cu-rich films. The results are compared to some literature data. (C) 1998 Elsevier Science B.V. All rights reserved.