钙钛矿(结构)
路易斯酸
钝化
离子液体
烯烃纤维
能量转换效率
材料科学
基础(拓扑)
戒指(化学)
氢键
化学
催化作用
纳米技术
图层(电子)
结晶学
光电子学
有机化学
分子
数学分析
数学
作者
Zhonggao Zhou,Lihua Li,Bolun Li,Jing Li,Tianyong Liu,Xi Huang,Shaobin Tang,Hongdeng Qiu,Wanzhu Cai,Shiyong Zhang,Kan Li,Guang-Juan Xu,Hongyu Zhen
出处
期刊:Small
[Wiley]
日期:2023-03-21
卷期号:19 (26)
被引量:2
标识
DOI:10.1002/smll.202300013
摘要
In optimizing perovskites with ionic liquid (IL), the comparative study on Lewis acid-base (LAB) and hydrogen-bonding (HB) interactions between IL and perovskite is lacking. Herein, methyl is substituted for hydrogen on 2-position of imidazolium ring of N-heterocyclic carbene (NHC) type IL IdH to weaken HB interactions, and the resulting N-heterocyclic olefin (NHO) type IL IdMe with softer Lewis base character is studied in both hybrid quasi-2D (Q-2D) and 3D perovskites. It is revealed that IdMe participates in constructing high-quality Q-2D perovskite (n = 4) and provides stronger passivation for 3D perovskite compared with IdH. Power conversion efficiency (PCE) of Q-2D PEA2 MA3 Pb4 I13 perovskite solar cells (PVSCs) is boosted to 17.68% from 14.03%. PCE and device stability of 3D PVSCs enhances simultaneously. Both theoretical simulations and experimental results show that LAB interactions between NHO and Pb2+ take the primary optimization effects on perovskite. The success of engineering LAB interactions also offers inspiration to develop novel ILs for high-performance PVSCs.
科研通智能强力驱动
Strongly Powered by AbleSci AI