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Sprayed Cu2ZnSn(S,Se)4 Solar Cells with Controlled S/(S+Se) Ratio

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We fabricated Cu2ZnSn(S,Se)4 absorber layers with different S/(S+Se) ratios using spray pyrolysis and post sulfo-selenization. We found that the band gap was controlled by varying the S/(S+Se) ratio during the sulfo-selenization process. This was confirmed by Raman and UV-Vis spectroscopy. We fabricated solar cells and characterized their properties. The best cell efficiency was 3.62% when S/(S+Se) = 0.46. The external quantum efficiency result also showed that the CZTSSe absorber was well-grown with a designed optical band gap.
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Document Type: Research Article

Publication date: November 1, 2018

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  • Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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