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Inverted MAPbI 3 Perovskite Solar Cells with Graphdiyne Derivative‐Incorporated Electron Transport Layers Exceeding 20% Efficiency
Author(s) -
Li Jiangsheng,
Wang Ning,
Bi Fuzhen,
Chen Siqi,
Zhao Chengjie,
Liu Le,
Yao Quantong,
Huang Changshui,
Xue Yurui,
Liu Huibiao,
Jiu Tonggang
Publication year - 2019
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.201900241
Subject(s) - materials science , energy conversion efficiency , perovskite (structure) , hysteresis , chemical engineering , photoelectric effect , optoelectronics , electron , nanotechnology , physics , quantum mechanics , engineering
Chlorine‐substituted graphdiyne (ClGD) is employed into electron transport layers (ETLs) of MAPbI 3 ‐based perovskite solar cells for the first time, forming a high‐quality film with superior film morphology and electrical conductivity as compared with pristine [6,6]‐phenyl‐C61‐butyric acid methyl ester (PCBM) film. Strikingly, a champion power conversion efficiency of 20.34% is achieved, showing a 19% enhancement compared with the counterparts (17.08%). Simultaneously, ClGD‐PCBM‐based devices show suppressed J – V hysteresis. It is experimentally and theoretically demonstrated that the interactions of derivated graphdiyne and PCBM stem from four types of noncovalent bonds, which contribute to the improved device performance. The results suggest that derivated graphdiyne‐based interfacial material is promising for the applications in solar cells and other photoelectric devices.