CH3NH3I post-treatment improves the performance of perovskite solar cells via eliminating the impure phases
CH3NH3I post-treatment improves the performance of perovskite solar cells via eliminating the impure phases
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DOI：
10.1142/s1793604717500497
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发表时间：
2017-08
影响因子：
1.3
通讯作者：
Jing-jing Liang;C. Liang;Huimin Zhang;Mengjie Sun;Hong Liu;Chao Ji;Xuewen Zhang;Dan Li;Zhiqun He
中科院分区：
文献类型：
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作者：
Jing-jing Liang;C. Liang;Huimin Zhang;Mengjie Sun;Hong Liu;Chao Ji;Xuewen Zhang;Dan Li;Zhiqun He
有机-无机卤化物钙钛矿目前在太阳能电池中的应用引起了广泛的兴趣。钙钛矿的形态和组成在太阳能电池中具有重要作用。钙钛矿薄膜中不可避免地存在杂质相，这将影响太阳能电池的性能。我们发现在先前的钙钛矿上的另一个MAI沉积可以改善膜。后沉积的MAI参与钙钛矿的重构，导致不纯相的量减少、晶粒尺寸增加、吸收增加和功率转换效率显著提高。结果表明，处理方法，以制造高效的平面异质结钙钛矿太阳能电池。
Organic–inorganic halide perovskites are currently generating extensive interest for applications in solar cells. The perovskite morphology and composition have significant roles in solar cells. Impure phases, which will influence the performance of solar cells, are inevitably present in the film of perovskite. We found that another MAI deposition on the previous perovskite could ameliorate the film. The post-deposited MAI participates in the reconstruction of the perovskite, leading to reduced amount of impure phase, increased grain size, increased absorption and significantly improved power conversion efficiency. The results demonstrate a treatment approach to fabricate efficient planar heterojunction perovskite solar cells.