High Crystallization of Perovskite Film by a Fast Electric Current Annealing Process
High Crystallization of Perovskite Film by a Fast Electric Current Annealing Process
复制标题
通过快速电流退火工艺实现钙钛矿薄膜的高结晶化
DOI：
10.1021/acsami.7b07775
复制
发表时间：
2017-08-16
影响因子：
9.5
通讯作者：
Chen, Zhijian
中科院分区：
文献类型：
--
作者：
Luo, Wei;Wu, Cuncun;Chen, Zhijian
近年来，高效有机无机杂化钙钛矿太阳能电池得到了快速发展并引起了广泛关注。晶体生长作为一个重要因素将显着影响钙钛矿薄膜的质量并最终影响器件性能，通常需要10分钟或更长时间的热退火。在此，我们展示了一种通过电流退火仅 5 s 即可获得钙钛矿薄膜高结晶度的新方法。与传统的热退火相比，形成的均匀钙钛矿薄膜具有更大的晶粒和更少的针孔，从而使器件具有更好的性能，具有更高的开路电压和填充因子。采用电流退火的平均功率转换效率为17.02%，高于采用传统热退火工艺的器件的平均功率转换效率（16.05%）。这种简单的电流退火工艺具有较低的能量损失和时间消耗，在光伏器件的工业大规模生产中显示出巨大的潜力。
High-efficiency organic inorganic hybrid perovskite solar cells have experienced rapid development and attracted significant attention in recent years. Crystal growth as an important factor would significantly influence the quality of perovskite films and ultimately the device performance, which usually requires thermal annealing for 10 min or more. Herein, we demonstrate a new method to get high crystallization of perovskite film by electric current annealing for just 5 s. In contrast to conventional thermal annealing, a homogeneous perovskite film was formed with larger grains and fewer pinholes, leading to a better performance of the device with higher open-circtlit voltage and fill factor. An average power conversion efficiency of 17.02% with electric current annealing was obtained, which is higher than that of devices with a conventional thermal annealing process (16.05%). This facile electric current annealing process with legs energy loss and time consumption shows great potential in the industrial mass production of photovoltaic devices.