Single-crystal halide perovskites: Opportunities and challenges

Abstract

Single-crystal halide perovskites have received growing attention due to their high carrier-transport efficiency and excellent stability in comparison with their polycrystalline counterparts. This review is timely, since it gives a comprehensive overview of the advances in single-crystal halide perovskite, including their unique physical properties, controllable crystal growth, and, most importantly, device applications. In the end, we share our perspectives on the remaining challenges and potential solutions for driving this emerging field forward. This review will provide food for thought to researchers in the field and a jump-start to beginners who want to join this exciting field. Single-crystal halide perovskites have demonstrated excellent optoelectronic properties and promising device application potentials, thanks to their remarkable carrier dynamics, solution processing procedures, and outstanding stabilities. The latest progress and future perspectives of single-crystal halide perovskites are reviewed herein. The basic properties and fundamental studies of single-crystal halide perovskites are first discussed. We then introduce the growth methods for these materials and summarize their recent developments. We further present the single-crystal halide perovskite devices among their major application fields. Finally, we discuss current challenges and provide some suggestions for their further development. We hope this paper can help readers understand the status and future challenges for single-crystal halide perovskites. Single-crystal halide perovskites have demonstrated excellent optoelectronic properties and promising device application potentials, thanks to their remarkable carrier dynamics, solution processing procedures, and outstanding stabilities. The latest progress and future perspectives of single-crystal halide perovskites are reviewed herein. The basic properties and fundamental studies of single-crystal halide perovskites are first discussed. We then introduce the growth methods for these materials and summarize their recent developments. We further present the single-crystal halide perovskite devices among their major application fields. Finally, we discuss current challenges and provide some suggestions for their further development. We hope this paper can help readers understand the status and future challenges for single-crystal halide perovskites. As a class of emerging semiconductors, halide perovskites hold significant potentials for multiple fields. However, current halide perovskite electronic devices are heavily focused on polycrystalline thin films, primarily due to the simplicity of depositing polycrystals.1Chen Y. He M. Peng J. Sun Y. Liang Z. Structure and growth control of organic-inorganic halide perovskites for optoelectronics: from polycrystalline films to single crystals.Adv. 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