材料科学
丝网印刷
制作
聚酰亚胺
太阳能电池
捷克先令
光电子学
光伏系统
短路
开路电压
扫描电子显微镜
带隙
烧结
复合材料
电压
图层(电子)
电气工程
工程类
病理
替代医学
医学
作者
Zhi‐Hua Zhou,Yanyan Wang,D. Xu,Yafei Zhang
标识
DOI:10.1016/j.solmat.2010.06.010
摘要
Cu2ZnSnS4 layers have been successfully fabricated on flexible polyimide substrates by screen printing. The microparticles of Cu2ZnSnS4, which is the main raw material for preparing screen printing paste, were prepared by wet ball milling and sintering methods. X-ray diffraction characterization results show the screen printed Cu2ZnSnS4 layers were well indexed to single phase Cu2ZnSnS4. Scanning electronic microscopy images show the diameters and lengths of the as-prepared Cu2ZnSnS4 microparticles are about 30–50 and 150–200 nm, respectively. The bandgap, sheet resistance, carrier concentration, and Hall mobility of the screen printed Cu2ZnSnS4 layers were about 1.49 eV, 2.42×103 Ω, 3.81×1018 cm−3, and 12.61 cm2 V−1 s−s at 25 °C, respectively. To evaluate the photoresponse of the screen printed Cu2ZnSnS4 layers, complete photovoltaic cells with the structure of polyimide/Mo/Cu2ZnSnS4/CdS/ZnO:Al/Al-grid were further fabricated. The short-circuit current density, open-circuit voltage, fill factor, and efficiency of a typical photovoltaic cell with an active area of 0.15 cm2 were 4.76 mA/cm2, 386 mV, 0.27, and 0.49%, respectively.
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