Phenylalkylamine Passivation of Organolead Halide Perovskites Enabling High-Efficiency and Air-Stable Photovoltaic Cells.
Benzylamine is introduced as a surface passivation molecule that improves the moisture-resistance of the perovskites while simultaneously enhancing their electronic properties. Solar cells based on benzylamine-modified formamidinium lead iodide perovskite films exhibit a champion efficiency of 19.2% and an open-circuit voltage of 1.12 V. The modified FAPbI3films exhibit no degradation after >2800 h air exposure.
Department of Electronic Engineering, The Chinese University of Hong Kong, New Territories, Hong Kong.
Feng
F
Wang
Beijing Computational Science Research Center, Beijing, 100084, P. R. China.
Wei
W
Geng
Department of Electronic Engineering, The Chinese University of Hong Kong, New Territories, Hong Kong.
Yang
Y
Zhou
Photophysics & OptoElectronics, Zernike Institute for Advanced Materials, Nijenborgh 4, Groningen, 9747 AG, The Netherlands.
Hong-Hua
HH
Fang
Beijing Computational Science Research Center, Beijing, 100084, P. R. China.
Chuan-Jia
CJ
Tong
Photophysics & OptoElectronics, Zernike Institute for Advanced Materials, Nijenborgh 4, Groningen, 9747 AG, The Netherlands.
Maria Antonietta
MA
Loi
Beijing Computational Science Research Center, Beijing, 100084, P. R. China.
Li-Min
LM
Liu
Department of Electronic Engineering, The Chinese University of Hong Kong, New Territories, Hong Kong.|Shenzhen Research Institute, The Chinese University of Hong Kong, Nanshan District, Shenzhen, 518172, P. R. China.
Ni
N
Zhao
benzylamine; passivation; perovskite solar cells