Effect of carrier mobility on performance of perovskite solar cells
Effect of carrier mobility on performance of perovskite solar cells
复制标题
载流子迁移率对钙钛矿太阳能电池性能的影响
DOI：
10.1088/1674-1056/28/4/048802
复制
发表时间：
2019-04-01
影响因子：
1.7
通讯作者：
Zhou, Chun-Yu
中科院分区：
文献类型：
--
作者：
Gu, Yi-Fan;Du, Hui-Jing;Zhou, Chun-Yu
钙钛矿型材料由于其优异的光伏性能，其高载流子迁移率和长扩散长度一直受到人们的重视。然而，许多研究表明，扩散长度大于和更高的载流子迁移率对电池的性能没有积极的影响。有机太阳能电池的研究已经证明了最佳迁移率值的存在，而系统的研究在PSC中的载流子迁移率非常罕见。为了弄清这些问题，本文通过模拟计算深入研究了载流子迁移率对钙钛矿太阳能电池性能的影响。研究表明，电荷传输层和吸收层的最佳迁移率值受掺杂浓度和层厚的影响。适当的载流子迁移率可以降低载流子复合率，提高载流子浓度，从而提高电池的性能。在本文优化的参数组合下，模拟电池获得了27.39%的高效率。
The high carrier mobility and long diffusion length of perovskite material have been regarded because of its excellent photovoltaic performance. However, many studies have shown that a diffusion length longer than and higher carrier mobility have no positive effect on the cells' performance. Studies of organic solar cells have demonstrated the existence of an optimal mobility value, while systematic research of the carrier mobility in the PSCs is very rare. To make these questions clear, the effect of carrier mobility on perovskite solar cells' performance is studied in depth in this paper by simulation. Our study shows that the optimal mobility value of the charge transportation layer and absorption layer are influenced by both doping concentration and layer thickness. The appropriate carrier mobility can reduce the carrier recombination rate and enhance the carrier concentration, thus improving the cells' performance. A high efficiency of 27.39% is obtained in the simulated cell with the combination of the optimized parameters in the paper.