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Phosphonium Halides as Both Processing Additives and Interfacial Modifiers for High Performance Planar‐Heterojunction Perovskite Solar Cells
Author(s) -
Sun Chen,
Xue Qifan,
Hu Zhicheng,
Chen Ziming,
Huang Fei,
Yip HinLap,
Cao Yong
Publication year - 2015
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201403344
Subject(s) - perovskite (structure) , halide , materials science , heterojunction , energy conversion efficiency , planar , cathode , phosphonium , layer (electronics) , optoelectronics , chemical engineering , polymer solar cell , inorganic chemistry , nanotechnology , chemistry , polymer chemistry , computer graphics (images) , computer science , engineering
Organic halide salts are successfully incorporated in perovskite‐based planar‐heterojunction solar cells as both the processing additive and interfacial modifier to improve the morphology of the perovskite light‐absorbing layer and the charge collecting property of the cathode. As a result, perovskite solar cells exhibit a significant improvement in power conversion efficiency (PCE) from 10% of the reference device to 13% of the modified devices.