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Preparation and characterization of Cu2ZnSn(S,Se)4 thin films by sulfurization of Cu-Zn-Sn-Se precursor layers

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Abstract

We fabricated Cu2ZnSn(S,Se)4 (CZTSSe) thin films by sulfurization of co-evaporated Cu-Zn-Sn-Se precursor layers under a mixed atmosphere of Ar and H2S. The concentration of H2S in the sulfurization chamber was adjusted to control the replacement of Se by S in CZTSSe thin films. The effect of applying different sulfurization atmospheres was analyzed using X-ray diffraction (XRD), Raman scattering, and secondary electron imaging. XRD patterns and Raman spectra confirmed the formation of polycrystalline CZTSSe thin films. The anion compositions of CZTSSe samples, which depended on the concentration of H2S, were estimated by using the peak heights of A modes in Raman spectra. To further analyze Raman scattering of CZTSSe thin film, we used a diamond anvil cell to apply a high pressure environment of up to 5.13 GPa on the CZTSSe sample. The effect of H2S concentration on the crystallinity of the CZTSSe thin films is also discussed.

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Authors and Affiliations

  1. Department of Physics, Chung-Ang University, Seoul, 06974, Korea

    Yongshin Kim & In-Hwan Choi

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  1. Yongshin Kim
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  2. In-Hwan Choi
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Correspondence to In-Hwan Choi.

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Kim, Y., Choi, IH. Preparation and characterization of Cu2ZnSn(S,Se)4 thin films by sulfurization of Cu-Zn-Sn-Se precursor layers. Journal of the Korean Physical Society 70, 281–285 (2017). https://doi.org/10.3938/jkps.70.281

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  • DOI: https://doi.org/10.3938/jkps.70.281

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