| 多功能氨基酸衍生物钝化的高性能钙钛矿太阳能电池 | |
| High performance perovskite solar cell based on passivation by a multifunctional amino acid derivative | |
| 摘要: 采用含有羧基、氨基和苯基等多官能团的氨基酸衍生物分子（Fmoc-L-异亮氨酸，Fmoc-Ile-OH）钝化钙钛矿薄膜表面缺陷。首先，该氨基酸衍生物可降低钙钛矿薄膜中PbI2杂质含量，并提高钙钛矿薄膜的颗粒尺寸。其次，氨基酸衍生物的引入可有效改善钙钛矿薄膜的光学特性和钙钛矿/电荷传输层界面载流子输运性能。另外，经钝化处理的钙钛矿太阳能电池表现出更优的器件二极管理想因子、更低的陷阱填充极限电压和更高的载流子复合电阻，这些结果证实了Fmoc-Ile-OH可有效钝化钙钛矿薄膜表面缺陷。最后，通过工艺条件优化，制得了转化效率为21.09% 的高效钙钛矿太阳能电池器件，其性能远优于对照组器件的效率（18.00%）。 | |
| 关键词: 钙钛矿太阳能电池 钝化 多官能团 氨基酸衍生物 | |
| 基金项目: 中央高校基本科研业务费（No.2018QNA06）资助 | |
| Abstract: Herein, we proposed a facial method to passivate surface defects on perovskite film by an amino acid derivative, Fmoc-Ile-OH molecule, which contains multifunctional groups, including carboxyl, amino, and Fmoc protecting group (with benzene ring). These functional groups exhibit a synergistic effect in improving perovskite film quality and stability. Specifically, we find that this modification could decrease the content of PbI2 impurity and enlarge the particle size of perovskite film. Moreover, the optical and interface carrier transport properties were improved apparently. The better diode ideality factors, lower trap-filled limit voltages, and higher carrier recombination resistance for modified perovskite solar cells all demonstrated that Fmoc-Ile-OH could effectively passivate surface defects in perovskite films. Finally, we obtain a device with high conversion efficiency, 21.09%, which is much better than the control one, 18.00%. | |
| Keywords: perovskite solar cell passivation multifunctional groups amino acid derivative | |
| 投稿时间：2022-09-18 修订日期：2022-11-28 | |
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| 宋健,苏星宙,姚倩楠,杨雪昆,赵宇龙,强颖怀,任春光.多功能氨基酸衍生物钝化的高性能钙钛矿太阳能电池[J].无机化学学报,2023,39(2):327-336. | |
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