Improvement of the photovoltaic performance of Cu2ZnSn(SxSe1-x)4 solar cells by adding polymer in the precursor solution
Improvement of the photovoltaic performance of Cu2ZnSn(SxSe1-x)4 solar cells by adding polymer in the precursor solution
复制标题
在前驱体溶液中添加聚合物提高Cu2ZnSn(SxSe1-x)(4)太阳能电池的光伏性能
DOI：
10.1088/1361-6463/aaab38
复制
发表时间：
2018-03-14
影响因子：
3.4
通讯作者：
Zhang, Zhen-Zhong
中科院分区：
文献类型：
--
作者：
Yang, Gang;Li, Yong-Feng;Zhang, Zhen-Zhong
Kesterite Cu2ZnSn(SxSe1-x)(4) (CZTSSe) thin films and related solar cells were successfully fabricated by a facile sol-gel method and selenization process. The influence of Polyvinylpyrrolidone (PVP) additive on the properties of the CZTSSe films and the power conversion efficiency (PCE) of the solar cells were investigated. The results reveal that the qualities of CZTSSe films can be manipulated by incorporating a small amount of PVP. With addition of 1 wt% of PVP, the smoothness and grain size of the CZTSSe films were greatly improved. The contact at the CZTSSe/Mo interface was also improved. As a result, the optimized PCE of solar cells improved from 2.24% to 4.34% after the addition of 1 wt% PVP due to the decrease of recombination at the interfaces. These results suggest that polymer addition in the precursor solution is a promising method for obtaining high quality of CZTSSe films and high-performance solar cells.
