Preparation and optical properties of chemical bath deposited ZnS thin films

Xiaoli Zhang; Juan Qin; Zhenyi Chen; Min Zhang; Jirong Li; Weimin Shi; Linjun Wang

doi:10.1117/12.888336

18 February 2011 Preparation and optical properties of chemical bath deposited ZnS thin films

Xiaoli Zhang, Juan Qin, Zhenyi Chen, Min Zhang, Jirong Li, Weimin Shi, Linjun Wang

Proceedings Volume 7995, Seventh International Conference on Thin Film Physics and Applications; 799512 (2011) https://doi.org/10.1117/12.888336
Event: Seventh International Conference on Thin Film Physics and Applications, 2010, Shanghai, China

Abstract

In this paper we study chemical bath deposition of ZnS thin films on glass slides with two different kinds of systems, that is, hydrazine hydrate system (N₂H₄•H₂O/NH₃•H₂O/SC(NH₂)₂/ZnSO₄) and citric acid system (C₆H₈O₇/NH₃•H₂O/ SC(NH₂)₂/ZnSO₄) in aqueous solution. The properties of ZnS thin films are characterized by X-ray diffraction, scanning electron microscopy and UV-Vis spectroscopy. The optical band gap is calculated from transmission spectra. The results show that ZnS thin films in citric acid system have better crystallization, higher transmittance and much lesser white spots which might be colloidal particles sedimentation mixed with ZnS, indicating that ZnS thin films prepared using citric acid system being more suitable for the buffer layer of CIGS solar cells.

Citation Download Citation

Xiaoli Zhang, Juan Qin, Zhenyi Chen, Min Zhang, Jirong Li, Weimin Shi, and Linjun Wang "Preparation and optical properties of chemical bath deposited ZnS thin films", Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 799512 (18 February 2011); https://doi.org/10.1117/12.888336

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KEYWORDS

Zinc

Thin films

Thin film deposition

Copper indium gallium selenide

Solar cells

Crystals

Optical properties

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