Haruta, YukiYe, HanyangHuber, PaulSandor, NicholasPavesic Junior, AntoineDayneko, SergeyQiu, ShuangYeddu, VishaSaidaminov, Makhsud I.2025-01-232025-01-232024Haruta, Y., Ye, H., Huber, P., Sandor, N., Pavesic, A., Junior, Dayneko, S., Qiu, S., Yeddu, V., & Saidaminov, M. I. (2024). Reproducible high-quality perovskite single crystals by flux-regulated crystallization with a feedback loop. Nature Synthesis, 3(10), 1212–1220. https://doi.org/10.1038/s44160-024-00576-8https://doi.org/10.1038/s44160-024-00576-8https://hdl.handle.net/1828/20981Controlling the linear growth rate, a critical factor that determines crystal quality, has been a challenge in solution-grown single crystals due to complex crystallization kinetics influenced by multiple parameters. Here we introduce a flux-regulated crystallization (FRC) method to directly monitor and feedback-control the linear growth rate, circumventing the need to control individual growth conditions. When applied to metal halide perovskites, the FRC maintains a stable linear growth rate for over 40?h in synthesizing CH3NH3PbBr3 and CsPbBr3 single crystals, achieving outstanding crystallinity (quantified by a full width at half-maximum of 15.3 arcsec in the X-ray rocking curve) in a centimetre-scale single crystal. The FRC is a reliable platform for synthesizing high-quality crystals essential for commercialization and systematically exploring crystallization conditions, maintaining a key parameter—the linear growth rate—constant, which enables a comprehensive understanding of the impact of other influencing factors.enAttribution 4.0 InternationalArticle