Synthesis and characterization of Cu2ZnSnS4 from Cu2SnS3 and ZnS compounds
Shi-na Li , Rui-xin Ma , Dong-ran Li , Fan Yang , Xiao-yong Zhang , Xiang Li , Hong-min Zhu
Optoelectronics Letters ›› : 277 -280.
Synthesis and characterization of Cu2ZnSnS4 from Cu2SnS3 and ZnS compounds
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·cm2 within 50 s, giving an on/off switching ratio of 1.64.
Photocurrent Density / Standard Card / Novolac Resin / CZTS Thin Film / CZTS Film
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