利用1-丙基-3-甲基咪唑氯盐提升钙钛矿性能与稳定性  

Improvement of the Perovskite Solar Cells Performance and Stability by Using 1-Methyl-3-Propylimidazolium Chloride Hexafluorophosphate Ionic Liquid

作　　者：帅菊 姚鑫 赵虹 艾琦 刘祖刚 SHUAI Ju;YAO Xin;ZHAO Hong;AI Qi;LIU Zugang(College of Optical and Electronic Technology,China Jiliang University,Hangzhou 310018,CHN)

机构地区：[1]中国计量大学光学与电子科技学院,杭州310018

出　　处：《光电子技术》2024年第2期121-126,132,共7页Optoelectronic Technology

基　　金：国家自然科学基金(62304213)。

摘　　要：在钙钛矿活性层中引入离子液体添加剂1-丙基-3-甲基咪唑氯盐(MPICl),并制备高效且稳定的反型钙钛矿太阳能电池(PSCs)。实验结果表明,MPICl咪唑环的N原子上存在的孤对电子和Pb^(2+)形成的配位键有助于协同缺陷钝化,显著抑制非辐射电荷复合。PSCs的光电转换效率(PCE)从16.69%提高到18.18%,MPICl-钙钛矿器件显著实现了长期稳定性。本研究为进一步减少缺陷来获得高性能器件提供了一种简便策略。An ionic liquid additive 1-propyl-3-methylimidazole chloride(MPICl)was introduced into the perovskite active layers and used to prepare highly efficient and stable inverted perovskite solar cells(PSCs).The experimental results showed that the coordination bond formed by Pb^(2+) and lone pair electrons on N atom of MPICl imidazole ring could contribute to cooperative defect passivation and significantly inhibit non-radioactive charge recombination.As a result,the power conversion efficiency(PCE)of the PSCs was increased from 16.69%to 18.18%,and the MPICl-perovskite devices achieved significantly long-term stability.This study provided an easy strategy of further reducing defects to obtain high-performance devices.

关 键 词：钙钛矿太阳能电池 离子液体 缺陷钝化 

分 类 号：TN366[电子电信—物理电子学] TM914[电气工程—电力电子与电力传动]