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Thermally Stable MAPbI 3 Perovskite Solar Cells with Efficiency of 19.19% and Area over 1 cm 2 achieved by Additive Engineering
Author(s) -
Wu Yongzhen,
Xie Fengxian,
Chen Han,
Yang Xudong,
Su Huimin,
Cai Molang,
Zhou Zhongmin,
Noda Takeshi,
Han Liyuan
Publication year - 2017
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.201701073
Subject(s) - materials science , perovskite (structure) , fabrication , energy conversion efficiency , photovoltaic system , iodide , thermal stability , crystal (programming language) , nanotechnology , optoelectronics , chemical engineering , inorganic chemistry , computer science , electrical engineering , chemistry , medicine , alternative medicine , pathology , engineering , programming language
Solution‐processed perovskite (PSC) solar cells have achieved extremely high power conversion efficiencies (PCEs) over 20%, but practical application of this photovoltaic technology requires further advancements on both long‐term stability and large‐area device demonstration. Here, an additive‐engineering strategy is developed to realize a facile and convenient fabrication method of large‐area uniform perovskite films composed of large crystal size and low density of defects. The high crystalline quality of the perovskite is found to simultaneously enhance the PCE and the durability of PSCs. By using the simple and widely used methylammonium lead iodide (MAPbI 3 ), a certified PCE of 19.19% is achieved for devices with an aperture area of 1.025 cm 2 , and the high‐performing devices can sustain over 80% of the initial PCE after 500 h of thermal aging at 85 °C, which are among the best results of MAPbI 3 ‐based PSCs so far.