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High‐Performance Perovskite Solar Cells with Enhanced Environmental Stability Based on Amphiphile‐Modified CH 3 NH 3 PbI 3
Author(s) -
Bi Dongqin,
Gao Peng,
Scopelliti Rosario,
Oveisi Emad,
Luo Jingshan,
Grätzel Michael,
Hagfeldt Anders,
Nazeeruddin Mohammad Khaja
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201505255
Subject(s) - perovskite (structure) , materials science , amphiphile , mesoporous material , energy conversion efficiency , stability (learning theory) , degradation (telecommunications) , chemical engineering , nanotechnology , computer science , organic chemistry , optoelectronics , copolymer , catalysis , chemistry , telecommunications , engineering , composite material , polymer , machine learning
A new aliphatic fluorinated amphiphilic additive is added to CH 3 NH 3 PbI 3 perovskite to tune the morphology and enhance the environmental stability without sacrificing the performance of the devices. Judicious screening of the perovskite precursor solution realizes a power conversion efficiency of 18.0% for mesoporous perovskite solar cells as a result of improved surface coverage. A slower degradation in ambient air is observed with this modified perovskite.