钙钛矿(结构)
材料科学
钝化
晶界
结晶
电荷(物理)
纳米晶材料
Crystal(编程语言)
能量转换效率
纳米晶
光电子学
纳米技术
化学工程
微观结构
复合材料
物理
工程类
计算机科学
量子力学
程序设计语言
图层(电子)
作者
Yingjie Wang,Jialin Zou,Chao Zhao,Haipeng Jiang,Yiwei Song,Le Zhang,Xin Li,Fengyou Wang,Lili Yang,Xiaoyan Liu,Maobin Wei,Lili Yang
标识
DOI:10.1021/acsami.3c19475
摘要
Effective defect passivation and efficient charge transfer within polycrystalline perovskite grains and corresponding boundaries are necessary to achieve highly efficient perovskite solar cells (PSCs). Herein, focusing on the boundary location of g-C3N4 during the crystallization modulation on perovskite, molecular engineering of 4-carboxyl-3-fluorophenylboronic acid (BF) on g-C3N4 was designed to obtain a novel additive named BFCN. With the help of the strong bonding ability of BF with both g-C3N4 and perovskite and favorable intramolecular charge transfer within BFCN, not only has the crystal quality of perovskite films been improved due to the effective defects passivation, but the charge transfer has also been greatly accelerated due to the formation of additional charge transfer channels on the grain boundaries. As a result, the champion BFCN-based PSCs achieve the highest photoelectric conversion efficiency (PCE) of 23.71% with good stability.
科研通智能强力驱动
Strongly Powered by AbleSci AI