The Guo Photonics Laboratory State Key Laboratory of Applied Optics Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 China
University of Chinese Academy of Sciences Beijing 100049 China
School of Chemical Engineering Changchun University of Technology Changchun 130012 China
School of Physics the University of Sydney Sydney NSW 2006 Australia
School of Materials Science and Engineering University of New South Wales Sydney NSW 2052 Australia
State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun 130012 China
The Institute of Optics University of Rochester Rochester NY 14627 USA
In article number 2000453, Weili Yu, Chunlei Guo and co‐workers demonstrate that by combining the space‐limiting technique and the anti‐temperature crystallization method, millimeter sized MAPbI3 perovskite monocrystals with thickness from tens of nanometers to micrometers can be fabricated. Solar cells based on the 300 nm thick perovskite monocrystal are prepared, which show 3% enhancement in power conversion efficiency (PCE) compared to their polycrystalline counterparts. This work provides a scalable way to synthesize high quality perovskite crystals with less grains and grain boundaries, is believed a key step to develop perovskite single crystal solar cells with high performance.
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