硒化铜铟镓太阳电池
电阻率和电导率
基质(水族馆)
晶界
材料科学
蒸发
霍尔效应
扫描电子显微镜
相(物质)
薄膜
分析化学(期刊)
苏打石灰玻璃
粒度
化学
微观结构
冶金
纳米技术
复合材料
工程类
有机化学
地质学
色谱法
物理
电气工程
海洋学
热力学
作者
H Wang,Y Zhang,Xiaolu Kou,Yongan Cai,W Liu,Taejong Yu,Jinbo Pang,C J Li,Yun Sun
标识
DOI:10.1088/0268-1242/25/5/055007
摘要
Cu(In, Ga)Se2 thin films were deposited on Mo/soda-lime glass substrates by the one-stage co-evaporation process at the substrate temperatures (Tsub) from 350 °C to 550 °C. The structural and electrical properties of CIGS films have been studied by x-ray diffraction (XRD), scanning electron microscopy (SEM) and Hall effect measurement. The experimental results indicate that a temperature of 450 °C is critical for CIGS films grown by the one-stage process. The (In, Ga)2Se3 phase with high resistivity is found below this temperature. The higher Tsub will lead to the formation of single-phase CIGS films with larger grain size and better electrical properties. A higher carrier concentration and lower resistivity of CIGS films are ascribed to sodium incorporation diffused from the glass substrate and the disappearance of the (In, Ga)2Se3 phase in CIGS films. Additionally, the performance of the CIGS solar cells improves significantly with the increase of Tsub. It can be attributed to the reduction of the grain-boundary recombination and the sufficient reaction between the additional (In, Ga)2Se3 phase and the CuxSey binary phase at Tsub above 500 °C.
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