Reproducible high-quality perovskite single crystals by flux-regulated crystallization with a feedback loop
Date
2024
Authors
Haruta, Yuki
Ye, Hanyang
Huber, Paul
Sandor, Nicholas
Pavesic Junior, Antoine
Dayneko, Sergey
Qiu, Shuang
Yeddu, Visha
Saidaminov, Makhsud I.
Journal Title
Journal ISSN
Volume Title
Publisher
Nature Synthesis
Abstract
Controlling 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.
Description
Keywords
Citation
Haruta, 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/s44160-024-00576-8