CuInSe2 Thin-Film Solar Cells with 7.72 % Efficiency Prepared via Direct Coating of a Metal Salts/Alcohol-Based Precursor Solution

Authors

  • Dr. SeJin Ahn,

    1. Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon (Korea), Fax: (+82) 42-860-3739
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  • Tae Hwa Son,

    1. Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon (Korea), Fax: (+82) 42-860-3739
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  • Ara Cho,

    1. Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon (Korea), Fax: (+82) 42-860-3739
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  • Dr. Jihye Gwak,

    1. Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon (Korea), Fax: (+82) 42-860-3739
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  • Dr. Jae Ho Yun,

    1. Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon (Korea), Fax: (+82) 42-860-3739
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  • Dr. Keeshik Shin,

    1. Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon (Korea), Fax: (+82) 42-860-3739
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  • Dr. Seoung Kyu Ahn,

    1. Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon (Korea), Fax: (+82) 42-860-3739
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  • Dr. Sang Hyun Park,

    1. Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon (Korea), Fax: (+82) 42-860-3739
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  • Dr. KyungHoon Yoon

    Corresponding author
    1. Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon (Korea), Fax: (+82) 42-860-3739
    • Solar Energy Department, Korea Institute of Energy Research, 71-2 Jangdong, Yuseonggu, Daejeon (Korea), Fax: (+82) 42-860-3739
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Abstract

A simple direct solution coating process for forming CuInSe2 (CIS) thin films was described, employing a low-cost and environmentally friendly precursor solution. The precursor solution was prepared by mixing metal acetates, ethanol, and ethanolamine. The facile formation of a precursor solution without the need to prefabricate nanoparticles enables a rapid and easy processing, and the high stability of the solution in air further ensures the precursor preparation and the film deposition in ambient conditions without a glove box. The thin film solar cell fabricated with the absorber film prepared by this route showed an initial conversion efficiency of as high as 7.72 %.

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