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

作　　者：宋健 苏星宙 姚倩楠 杨雪昆 赵宇龙[1] 强颖怀[1] 任春光 SONG Jian;SU Xing-Zhou;YAO Qian-Nan;YANG Xue-Kun;ZHAO Yu-Long;QIANG Ying-Huai;REN Chun-Guang(School of Materials Science and Physics,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;College of Life Sciences,Yantai University,Yantai,Shandong 264000,China)

机构地区：[1]中国矿业大学材料与物理学院,徐州221116 [2]烟台大学生命科学学院,烟台264000

出　　处：《无机化学学报》2023年第2期327-336,共10页Chinese Journal of Inorganic Chemistry

基　　金：中央高校基本科研业务费(No.2018QNA06)资助。

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PbI_(2)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%)。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 PbI_(2)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%.

关 键 词：钙钛矿太阳能电池 钝化 多官能团 氨基酸衍生物 

分 类 号：O649.2[理学—物理化学]