Structure and Growth Control of Organic-Inorganic Halide Perovskites for Optoelectronics: From Polycrystalline Films to Single Crystals.
Structure and Growth Control of Organic-Inorganic Halide Perovskites for Optoelectronics: From Polycrystalline Films to Single Crystals.
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DOI：
10.1002/advs.201500392
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发表时间：
2016-04
期刊：
影响因子：
15.1
通讯作者：
Liang, Ziqi
中科院分区：
文献类型：
--
作者：
Chen, Yani;He, Minhong;Peng, Jiajun;Sun, Yong;Liang, Ziqi
最近，有机-无机卤化物钙钛矿因其开创性的光伏性能而引发了巨大的研究兴趣。钙钛矿的晶化过程和晶体形状对其光电性能有着显著的影响。多晶薄膜和单晶是钙钛矿的两种主要形式。目前，钙钛矿薄膜的研究已得到广泛的关注，而钙钛矿单晶的研究才刚刚起步。这篇综述文章集中在钙钛矿结构和生长的控制上，这不仅与太阳能电池的改进密切相关，而且与发光二极管、激光器和光电探测器的改进密切相关。我们开始与钙钛矿薄膜的形成过程，包括沉积方法和形态优化途径的调查。诸如使用添加剂、热退火、溶剂退火、气氛控制和溶剂工程等策略已成功地用于产生高质量的钙钛矿薄膜。接下来，我们总结了钙钛矿单晶从三维大尺寸单晶、二维纳米片、一维纳米线到零维量子点的形状演变。强调了钙钛矿单晶的重要作用，有助于本征电子物理的基础研究。然后，前面提到的钙钛矿晶体的生长机制被揭开。最后，概述了钙钛矿的结构和生长控制对高性能（光）电子器件的前景。
Recently, organic–inorganic halide perovskites have sparked tremendous research interest because of their ground‐breaking photovoltaic performance. The crystallization process and crystal shape of perovskites have striking impacts on their optoelectronic properties. Polycrystalline films and single crystals are two main forms of perovskites. Currently, perovskite thin films have been under intensive investigation while studies of perovskite single crystals are just in their infancy. This review article is concentrated upon the control of perovskite structures and growth, which are intimately correlated for improvements of not only solar cells but also light‐emitting diodes, lasers, and photodetectors. We begin with the survey of the film formation process of perovskites including deposition methods and morphological optimization avenues. Strategies such as the use of additives, thermal annealing, solvent annealing, atmospheric control, and solvent engineering have been successfully employed to yield high‐quality perovskite films. Next, we turn to summarize the shape evolution of perovskites single crystals from three‐dimensional large sized single crystals, two‐dimensional nanoplates, one‐dimensional nanowires, to zero‐dimensional quantum dots. Siginificant functions of perovskites single crystals are highlighted, which benefit fundamental studies of intrinsic photophysics. Then, the growth mechanisms of the previously mentioned perovskite crystals are unveiled. Lastly, perspectives for structure and growth control of perovskites are outlined towards high‐performance (opto)electronic devices.
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