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Enhancement of the Interfacial Connection via Carboxyl‐Substituted Perylene as Electron‐Transport Layer for Efficient and Stable Perovskite Solar Cells
Author(s) -
Zhao Hang,
Xu Jia,
Yang Yi,
Li Zhenzhen,
Zhang Bing,
Liu Xiaolong,
Dai Songyuan,
Yao Jianxi
Publication year - 2018
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.201800205
Subject(s) - perylene , perovskite (structure) , materials science , layer (electronics) , electron transport chain , optoelectronics , transport layer , conjugated system , chemical engineering , electron , photochemistry , nanotechnology , chemistry , molecule , composite material , polymer , organic chemistry , biochemistry , physics , quantum mechanics , engineering
Carboxyl‐substituted perylene (PTCA) has been successfully applied as the electron‐transport layer in perovskite solar cells. The large rigid π–π conjugated plane structure in PTCA endows it excellent electronic transmission performance. By the carboxyl groups, PTCA can effectively connect the perovskite layer and FTO, thus reducing the interface barriers induced by weak contact, resulting in a high PCE of 16.09%. In addition, the PTCA‐based devices exhibit remarkable stability under illumination in ambient conditions without encapsulation.