CIGS Thin Film: Synthesis and Characterization

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Abstract:

Cu (In, Ga)Se2 (CIGS) thin film was prepared by ion beam sputtering Cu, In, Se and evaporating Ga elements continuously on BK7 glass substrate and the 4-layer film was then annealed at 400 oC for 1h in the same vacuum chamber. The CIGS thin film is single-phase with chalcopyrite structure and has a preferential (112) orientation. Its elemental composition approaches the stochiometric composition ratio of 1:0.7:0.3:2 and it consists of densely packed grain clusters. An energy band gap of about 1.30 eV and an absorption coefficient of 105 cm-1 are obtained. Thus, an optimization of the fabrication for CIGS thin films was achieved.

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Advanced Materials Research (Volumes 734-737)

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2480-2483

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August 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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