Study of the sub-bandgap absorption and the optical transitions in CuInSe<sub>2</sub> polycrystalline thin films期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Study of the sub-bandgap absorption and the optical transitions in CuInSe₂ polycrystalline thin films

Authors:	N Kavcar

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.

Keywords:	Optical transitions CuInSe₂ Absorption coefficient Photon energy
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