Effect of Cu/In Ratio on Properties of CuInS2 Films Prepared by Ultrasonic Spray Pyrolysis Method

Xiao Zhang; Hua Wang; Ji Wen Xu; Ling Yang; Ming Fang Ren

doi:10.4028/www.scientific.net/AMR.199-200.1936

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 199-200Effect of Cu/In Ratio on Properties of CuInS2...

Effect of Cu/In Ratio on Properties of CuInS₂ Films Prepared by Ultrasonic Spray Pyrolysis Method

Abstract:

CuInS₂ thin films were prepared on heated glass substrates by ultrasonic spray pyrolysis method. Structure, surface morphology and properties of films with different Cu/In ratios have been investigated. X-ray diffraction (XRD) analysis demonstrated that as-prepared CuInS₂ thin films with chalcopyrite structure have a preferential orientation along the (112) direction. SEM study shows films are relatively dense and smooth, but the much bigger grains and the large coherent agglomerates appear in films (Cu/In>1.25) due to the appearance of phase Cu₂S. CuInS₂ thin film (Cu/In=1.25) has a strong visible absorption and its energy band gap comes up to 1.45eV.

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Advanced Materials Research (Volumes 199-200)

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1936-1939

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https://doi.org/10.4028/www.scientific.net/AMR.199-200.1936

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February 2011

Authors:

Xiao Zhang, Hua Wang, Ji Wen Xu, Ling Yang, Ming Fang Ren

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Cu/In Ratio, CuInS2, Ultrasonic Spray Pyrolysis

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