极化子
电子迁移率
材料科学
光伏
兴奋剂
卟啉
钙钛矿(结构)
光电子学
光伏系统
化学物理
纳米技术
光化学
化学
电子
结晶学
电气工程
物理
量子力学
工程类
作者
Xijiao Mu,Yajun Li,Guo‐Bin Xiao,Xu Cheng,Xingbang Gao,Jing Cao
标识
DOI:10.1002/ange.202307152
摘要
Abstract Modulating the surface charge transport behavior of hole transport materials (HTMs) would be as an potential approach to improve their hole mobility, while yet realized for fabricating efficient photovoltaic devices. Here, an oxygen bridged dimer‐based monoamine Fe III porphyrin supramolecule is prepared and doped in HTM film. Theoretical analyses reveal that the polaron distributed on dimer can be coupled with the parallel arranged polarons on adjacent dimers. This polaron coupling at the interface of supramolecule and HTM can resonates with hole flux to increase hole transport efficiency. Mobility tests reveal that the hole mobility of doped HTM film is improved by 8‐fold. Doped perovskite device exhibits an increased efficiency from 19.8 % to 23.2 %, and greatly improved stability. This work provides a new strategy to improve the mobility of HTMs by surface carrier modulation, therefore fabricating efficient photovoltaic devices.
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