Structural and Optical Properties of Cu₂MnSnS₄ Thin Film Fabricated by Sol-Gel Technique

Abstract:

Cu₂MnSnS₄ thin film was successfully prepared by a sol-gel technique on soda lime glass substrate from metal salts and thiourea. The structural and morphological properties of the fabricated film were characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscopy and atomic force microscopy. The combination of the X-ray diffraction results and Raman spectroscopy reveal that this obtained layer is composed by Cu₂MnSnS₄ phase and has a stannite structure with preferential orientation along the (112) direction. The scanning electron microscopy and atomic force microscopy results show that the synthesized thin film is smooth and compact without any visible cracks or pores. The band gap of the Cu₂MnSnS₄ thin film is about 1.29 eV determined by the UV-vis-NIR absorption spectra measurement, which indicates it has potential applications in solar cells.

• Periodical: Materials Science Forum (Volume 814)
• Pages: 39-43
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.814.39
• Online since: March 2015
• Authors: Lei Lei Chen, Hong Mei Deng, Ke Zhi Zhang, Ling Huang, Jian Liu, Lin Sun, Ping Xiong Yang*, Jun Hao Chu
• Keywords: CMTS, Sol-Gel, Thin Film

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