Premium
Efficient Inorganic Cesium Lead Mixed‐Halide Perovskite Solar Cells Prepared by Flash‐Evaporation Printing
Author(s) -
Tai Meiqian,
Wang Guang,
Yin Xuewen,
Zhou Yu,
Han Jianhua,
Wei Yang,
Jiang Kaili,
Lin Hong
Publication year - 2019
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201800986
Subject(s) - crystallinity , flash evaporation , materials science , perovskite (structure) , halide , evaporation , caesium , photovoltaics , chemical engineering , nanotechnology , stoichiometry , annealing (glass) , photovoltaic system , inorganic chemistry , chemistry , composite material , organic chemistry , ecology , physics , chromatography , biology , engineering , thermodynamics
Cesium‐based inorganic perovskites have attracted enormous interest for efficient and stable photovoltaics, while still a few studies apply evaporation methods with high reproducibility to prepare them. Herein, high‐quality CsPbI 2 Br films are deposited by flash‐evaporation printing (FEP), a single source evaporation method using laser as the heating source and carbon nanotube sheets as the evaporator. Uniform films with balanced stoichiometry and high crystallinity can be obtained by controlling the precursor ratio and post‐annealing conditions. Planar solar cells using these inorganic perovskite films exhibit champion power conversion efficiencies of 12.2% in small areas (0.06 cm 2 ) and 9.4% in large areas (1 cm 2 ) with insignificant hysteresis, indicating that the FEP method is a promising way in preparing high‐quality inorganic perovskite films for efficient large‐area devices.