双功能
钙钛矿(结构)
单层
材料科学
能量转换效率
钙钛矿太阳能电池
钝化
磁滞
化学工程
结晶度
图层(电子)
光电子学
化学
纳米技术
复合材料
有机化学
催化作用
工程类
物理
量子力学
作者
Fei Han,Guimin Hao,Zhongquan Wan,Junsheng Luo,Jianxing Xia,Chunyang Jia
标识
DOI:10.1016/j.electacta.2018.10.130
摘要
The electron transporting layer/perovskite interface is crucial to the power conversion efficiency of perovskite solar cell. In this work, we study the effect of bifunctional 4-picolinic acid self-assembled monolayer as electron transporting layer/perovskite interface linker on perovskite crystallinity and electron transporting layer/perovskite interface transfer property for high performance perovskite solar cell. Our result shows that the 4-picolinic acid self-assembled monolayer modified device exhibits the highest efficiency of 18.90% and negligible hysteresis index of 0.03 under illumination of AM 1.5G (100 mW cm−2), compared to that (14.65%) of the unmodified device. It can be concluded that the bifunctional self-assembled monolayer can be grappled with the TiO2, increase grain sizes of MAPbI3, effectively passivate TiO2/perovskite interface, and preferably balance electrons and holes transfer, which significantly improves device performance with negligible hysteresis. Our results also indicate bifunctional self-assembled monolayer is a preferable pathway for fabricating high performance and low hysteresis perovskite solar cells.
科研通智能强力驱动
Strongly Powered by AbleSci AI