2D Perovskite Single Crystals for Photodetectors: From Macro- to Microscale,Physica Status Solidi-Rapid Research Letters

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2D Perovskite Single Crystals for Photodetectors: From Macro- to Microscale
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2021-06-01 , DOI: 10.1002/pssr.202100183
Wenchao Xu ₁ , Wenjun Huang ₁ , Xiujia Wu ₁ , Xiangfeng Wei ₂ , Fancheng Meng _{1,

3} , Jiehua Liu _{1,

3}

Affiliation

Lead-halide-based perovskite single crystals have attracted wide attention due to their excellent optical characteristics, photoelectric performance, and designable structures. 2D sheet-like single-crystal perovskite materials have several attractive characteristics, including larger exposed facets, adjustable thickness, good light absorption/transparency, and so on. However, single-crystal perovskite sheets with a thinner thickness (<10 μm) are hard to obtain by conventional mechanical cutting due to the fragility of perovskite single crystals. Herein, the recent progress in research on 2D perovskite single crystals from macro- to microscale is reviewed. Crystal growth methods are classified into six strategies, including space-limit method, surface-tension method, top-down method, spin-coating method, solution-phase method, and vapor-phase method. Subsequently, the properties of 2D perovskite single crystals are further highlighted, such as optical properties, crystal defects, carrier transport properties, detection capability, and stability. Moreover, their applications in single-crystal photodetectors are summarized. Finally, the summary and perspective on 2D perovskite single crystals are also briefly addressed.

中文翻译：

用于光电探测器的二维钙钛矿单晶：从宏观到微观

卤化铅基钙钛矿单晶因其优异的光学特性、光电性能和可设计的结构而受到广泛关注。二维片状单晶钙钛矿材料具有几个吸引人的特性，包括更大的暴露面、可调节的厚度、良好的光吸收/透明度等。然而，由于钙钛矿单晶的脆性，很难通过常规机械切割获得厚度更薄（<10 μm）的单晶钙钛矿片。本文综述了从宏观到微观尺度的二维钙钛矿单晶研究的最新进展。晶体生长方法分为六种策略，包括空间限制法、表面张力法、自顶向下法、旋涂法、溶液相法、和气相法。随后，进一步突出了二维钙钛矿单晶的光学特性、晶体缺陷、载流子传输特性、检测能力和稳定性等特性。此外，总结了它们在单晶光电探测器中的应用。最后，还简要介绍了二维钙钛矿单晶的概述和前景。

更新日期：2021-06-01

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