大规模钙钛矿单晶生长和表面图案化技术,Small Science

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大规模钙钛矿单晶生长和表面图案化技术
Small Science ( IF 11.1 ) Pub Date : 2023-10-18 , DOI: 10.1002/smsc.202300085
Jinshuai Zhang _{1,

2} , Jiepeng Song ₁ , Qing Zhang ₁

Affiliation

在过去的十年中，金属卤化物钙钛矿多晶薄膜在高性能光电器件领域取得了重大进展，包括光电探测器、太阳能电池、发光二极管和激光器。具有周期性微/纳米阵列的钙钛矿薄膜因其不仅能够提高单个器件的效率而且在未来商业化方面具有巨大的前景而受到广泛关注。与多晶材料相比，钙钛矿单晶通常表现出更长的载流子扩散长度、更长的载流子寿命以及由于不存在晶界和减少缺陷而增强的载流子迁移率，这使得它们成为基础研究和先进光电器件的有希望的候选者。为此，人们致力于开发多种方法来合成大规模钙钛矿单晶，包括块状单晶和单晶薄膜。此外，为了将独特的功能与单晶相结合，人们在单晶表面某些图案的设计上投入了大量的精力。本文介绍了大规模单晶制备技术及其表面图案化方法的最新进展，强调了每种方法的独特优势，并介绍了它们在各种光电应用中的有希望的进展以及潜在的挑战。

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Large-Scale Perovskite Single Crystal Growth and Surface Patterning Technologies

In the past decade, metal halide perovskite polycrystalline films have witnessed significant advancements in the field of high-performance optoelectronic devices, including photodetectors, solar cells, light-emitting diodes, and lasers. Perovskite films with periodic micro/nanoarrays have garnered substantial attention due to their capability not only to improve the efficiency of individual devices but also to hold great promise for future commercialization. Surpassing their polycrystalline counterparts, perovskite single crystals typically exhibit longer carrier diffusion lengths, extended carrier lifetimes, and enhanced carrier mobility due to the absence of grain boundaries and reduced defects, positioning them as promising candidates for both fundamental studies and advanced optoelectronic devices. To this end, significant endeavors have been dedicated to the development of diverse methodologies for synthesizing large-scale perovskite single crystals, including bulk single crystals and single-crystal thin films. Furthermore, aiming to integrate the distinctive functionality with single crystals, considerable efforts have been directed toward the design of certain patterns on single-crystal surfaces. Herein, this review presents recent progress in technologies for the preparation of large-scale single crystals and the approaches to patterning their surfaces, highlights the unique advantages of each method, and presents their promising advances in various optoelectronic applications as well as the potential challenges.

更新日期：2023-10-18

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