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Cu2ZnSnSe4 Thin Films Prepared by Selenization of One-step Electrochemically Deposited Cu-Zn-Sn-Se Precursors
Meng Mingming 1 #,Wan Lei 2,Zou Peng 3,Miao Shiding 4,Xu Jinzhang 2 *
1.School of Electrical Engineering and Automation, Hefei University of Technology (HFUT), HeFei 230009
2.School of Electrical Engineering and Automation, Hefei University of Technology (HFUT), Hefei 230009
3.School of Materials Science and Engineering, Hefei University of Technology (HFUT), Hefei 230009
4.School of Chemical Engineering, HFUT, Hefei 230009
*Correspondence author
#Submitted by
Subject:
Funding: Natural Science Foundation of Anhui Province （No.No. 11040606Q45）, Research Fund for the Doctoral Program of Higher Education of China （No.No. 20110111120002 and No. 20110111110002）
Opened online:16 October 2012
Accepted by: none
Citation: Meng Mingming,Wan Lei,Zou Peng.Cu2ZnSnSe4 Thin Films Prepared by Selenization of One-step Electrochemically Deposited Cu-Zn-Sn-Se Precursors[OL]. [16 October 2012] http://en.paper.edu.cn/en_releasepaper/content/4491026
 
 
A non-vacuum strategy was reported in facile preparation of kesterite-type Cu2ZnSnSe4 (CZTSe) thin films via selenization of one-step electrochemically prepared Cu-Zn-Sn-Se precursors. The Cu-Zn-Sn-Se precursor films were prepared by electrochemical deposition from electrolytes containing CuSO4, ZnSO4, SnCl4 and H2SeO3, and the substrate is a Mo coated soda-lime glass. The CZTSe thin films were obtained by annealing the electrochemically deposited films in the selenium vapors at the temperature of 550 C. The crystal phases, micro-structures, chemical compositions and optical properties of CZTSe films have been studied by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), inductively coupled plasma optical emission spectrometer (ICP-OES), Raman scattering spectrum, and UV-Vis absorption spectroscopic means. The results revealed that the electrolytes with Cu:Zn:Sn:Se molar ratio of 3:70:20:3 yields nearly pure phase of kesterite, and a band gap of 0.94eV was determined by spectroscopic measurements.
Keywords:Solar energy materials; Cu2ZnSnSe4; Electrodeposition; Thin films
 
 
 

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