@article{Wang2022, 
author = {Shiheng Wang and Zhenkun Gu and Rudai Zhao and Ting Zhang and Yunjie Lou and Lutong Guo and Meng Su and Lihong Li and Yiqiang Zhang and Yanlin Song},
title = {A general method for growth of perovskite single-crystal arrays for high performance photodetectors},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {7},
pages = {6568-6573},
keywords = {single-crystal arrays, lithography-free, hydrophilic-hydrophobic substrate, ultraviolet (UV) photodetector},
url = {https://www.sciopen.com/article/10.1007/s12274-022-4205-x},
doi = {10.1007/s12274-022-4205-x},
abstract = {Perovskite single-crystal arrays have attracted intensive attention because of their great potentials for integrated optoelectronic devices. However, the traditional top-down lithography strategy requires complex processing and is detrimental to perovskite crystal structures, which is incompatible to directly pattern perovskite single crystals. Herein, we report a lithography-free method to realize the controllable growth of perovskite single-crystal arrays. Through introducing a printed hydrophilic-hydrophobic substrate into the crystallization system, the MAPbCl3 single-crystal arrays with precise location and uniform size are effectively fabricated. This method can be applied to prepare diverse perovskite single-crystal arrays, including MAPbBr3, CsPbCl3, CsPbBr3, Cs3Cu2I5, Cs3Bi2I9, and (BA)2(MA)3Pb4I11. The perovskite single crystals can be selectively grown on the electrodes to fabricate ultraviolet photodetectors. The strategy demonstrates a facile approach to fabricate large-scale perovskite single-crystal arrays and opens a pathway to produce diverse perovskite optoelectronic devices.}
}