Chlorine Incorporation for Enhanced Performance of Planar Perovskite Solar Cell Based on Lead Acetate Precursor
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- 作者：Jian Qing ; Hrisheekesh-Thachoth Chandran ; Yuan-Hang Cheng ; Xiao-Ke Liu ; Ho-Wa Li ; Sai-Wing Tsang ; Ming-Fai Lo ; Chun-Sing Lee
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2015
- 出版时间：October 21, 2015
- 年：2015
- 卷：7
- 期：41
- 页码：23110-23116
- 全文大小：458K
- ISSN：1944-8252
文摘
We show the effects of chlorine incorporation in the crystallization process of perovskite film based on a lead acetate precursor. We demonstrate a fabrication process for fast grain growth with highly preferred {110} orientation upon only 5 min of annealing at 100 掳C. By studying the correlation between precursor composition and morphology, the growth dynamic of perovskite film in the current system is discussed. In particular, we found that both lead acetate precursor and Cl incorporation are beneficial to perovskite growth. While lead acetate allows fast crystallization process, Cl improves perovskite crystallinity. Planar perovskite solar cells with optimized parameters deliver a best power conversion efficiency of 15.0% and average efficiency of 14.0% with remarkable reproducibility and good stability.