Fig. 1. (Color online) Common solution growth methods for perovskite single crystals. (a) Inverse temperature crystallization method. Reproduced with permission^[19], Copyright 2015, Springer Nature. (b) Solution temperature-lowering method. Reproduced with permission^[20], Copyright 2015, Science (AAAS). (c) Antisolvent vapor-assisted crystallization. Reproduced with permission^[22], Copyright 2015, Science (AAAS).

Fig. 2. (Color online) (a) MAI escape from MAPbI₃ films in high-temperature and low-temperature crystallization. (b) Cross-sectional SEM images and device structure for MAPbI₃ single-crystal PSC. Reproduced with permission^[25], Copyright 2020, American Chemical Society. (c) The planar-type photodetector fabricated on (100) facet of a MAPbI₃ single crystal. Reproduced with permission^[27], Copyright 2015, Springer Nature. (d) The X-ray image for a key by Cs₃Bi₂I₉ single-crystal detector (1 × 1 mm²). Reproduced with permission^[32], Copyright 2020, Springer Nature. (e) Emission intensityvs time plot for an LED operated at 1 mA current. Inset: SEM image for MAPbBr₃ micro-platelet and the image of LED att = 12 h. Reproduced with permission^[33], Copyright 2017, American Chemical Society. (f) Normalized PL spectra for (BA)₂Cs_n−1Pb_nBr_3n+1 single crystals. Reproduced with permission^[35], Copyright 2020, Science (AAAS).