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首页> 外文期刊>Nanoscale >A facile, solvent vapor-fumigation-induced, self-repair recrystallization of CH3NH3PbI3 films for high-performance perovskite solar cells
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A facile, solvent vapor-fumigation-induced, self-repair recrystallization of CH3NH3PbI3 films for high-performance perovskite solar cells

机译：简单,溶剂vapor-fumigation-induced自我修复的再结晶CH3NH3PbI3电影高性能钙钛矿太阳能电池

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摘要

A high-quality CH3NH3PbI3 film is crucial in the manufacture of a high-performance perovskite solar cell. Here, a recrystallization process via facile fumigation with DMF vapor has been successfully introduced to self-repair of CH3NH3PbI3 films with poor coverage and low crystallinity prepared by the commonly used one-step spin-coating method. We found that the CH3NH3PbI3 films with dendritic structures can spontaneously transform to the uniform ones with full coverage and high crystallinity by adjusting the cycles of the recrystallization process. The mesostructured perovskite solar cells based on these repaired CH3NH3PbI3 films showed reproducible optimal power conversion efficiency (PCE) of 11.15% and average PCE of 10.25 +/- 0.90%, which are much better than that of devices based on the non-repaired CH3NH3PbI3 films. In addition, the hysteresis phenomenon in the current-voltage test can also be effectively alleviated due to the quality of the films being improved in the optimized devices. Our work proved that the fumigation of solvent vapor can modify metal organic perovskite films such as CH3NH3PbI3. It offers a novel and attractive way to fabricate high-performance perovskite solar cells.
机译：一个高质量的CH3NH3PbI3电影是至关重要的制造高性能钙钛矿太阳能电池。简单与DMF蒸汽熏蒸成功引入自我修复CH3NH3PbI3电影差的覆盖和低常用的结晶度有所准备一步旋转涂布方法。CH3NH3PbI3电影与树突结构自发地变换到统一的完全覆盖和高结晶度的调整再结晶过程的周期。介孔钙钛矿太阳能电池的基础上这些修复CH3NH3PbI3电影显示可再生的最佳功率转换效率(PCE)为11.15%,平均10.25 + / -的PCE0.90%,比这更好的设备基于non-repaired CH3NH3PbI3电影。的滞后现象电流电压测试也可以有效缓解由于电影的质量改善优化设备。证明溶剂蒸汽熏蒸的修改金属有机钙钛矿电影等CH3NH3PbI3。制造高性能钙钛矿的太阳能细胞。

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