Synthesis and characterization of Cu2ZnSnS4 from Cu2SnS3 and ZnS compounds
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1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;2 Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China

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    Abstract:

    The Cu2ZnSnS4 (CZTS) powders are successfully synthesized by using ZnS and Cu2SnS3 as raw materials directly without any intermediate phase at 450 °C for 3 h in Ar atmosphere. The crystalline structure, morphology and optical properties of the CZTS powders are characterized by X-ray diffraction (XRD), Raman spectrum, field emission scanning electron microscopy (FESEM) and ultraviolet-visible (UV-vis) spectrophotometer, respectively. The results show that the band gap of the obtained CZTS is 1.53 eV. The CZTS film is fabricated by spin coating a mixture of CZTS powders and novolac resin with a weight percentage of 30%. The photoelectrical properties of such CZTS films are measured, and the results show an incident light density of 100 mW.cm-2 with the bias voltage of 0.40 V, and the photocurrent density can approach 9.80×10-5 A.cm2within 50 s, giving an on/off switching ratio of 1.64.

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LI Shi-na, MA Rui-xin, LI Dong-ran, YANG Fan, ZHANG Xiao-yong, LI Xiang, ZHU Hong-min. Synthesis and characterization of Cu2ZnSnS4 from Cu2SnS3 and ZnS compounds[J]. Optoelectronics Letters,2015,11(4):277-280

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  • Received:March 25,2015
  • Online: November 26,2015
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