Advances in light-emitting metal-halide perovskite nanocrystals
Advances in light-emitting metal-halide perovskite nanocrystals
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DOI：
10.1557/mrs.2020.143
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发表时间：
2020-06
期刊：
影响因子：
5
通讯作者：
Liang-jin Xu;Michael Worku;Qingquan He;Biwu Ma
中科院分区：
文献类型：
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作者：
Liang-jin Xu;Michael Worku;Qingquan He;Biwu Ma
金属卤化物钙钛矿，特别是其纳米晶形态，已成为新一代发光材料，具有优异的光学性能，包括覆盖整个可见光区域的窄发射，高达近1的光致发光量子效率。在过去的几年里，在材料开发和设备集成领域取得了显著的进展。已建立了多种合成方法来精确控制金属卤化物钙钛矿纳米晶(NCS)的组成和微结构，这些纳米晶具有可调的带隙和发射颜色。金属卤化物钙钛矿纳米碳管作为光电子器件的活性材料已经得到了广泛的探索。在此，我们对金属卤化物钙钛矿纳米碳化物的发展和应用的最新进展进行了简要的综述。从通过离子交换和操纵量子尺寸效应来调色，到通过表面钝化来增强稳定性，讨论了用于材料开发的新化学。此外，还将介绍基于金属卤化物钙钛矿NCS的光电子器件的工艺，特别是发光二极管和辐射探测器。同时也为今后金属卤化物钙钛矿纳米碳管的研究提供了机会。
Metal-halide perovskites, in particular their nanocrystal forms, have emerged as a new generation of light-emitting materials with exceptional optical properties, including narrow emissions covering the whole visible region with high photoluminescence quantum efficiencies of up to near-unity. Remarkable progress has been achieved over the last few years in the areas of materials development and device integration. A variety of synthetic approaches have been established to precisely control the compositions and microstructures of metal-halide perovskite nanocrystals (NCs) with tunable bandgaps and emission colors. The use of metal-halide perovskite NCs as active materials for optoelectronic devices has been extensively explored. Here, we provide a brief overview of recent advances in the development and application of metal-halide perovskite NCs. From color tuning via ion exchange and manipulation of quantum size effects, to stability enhancement via surface passivation, new chemistry for materials development is discussed. In addition, processes in optoelectronic devices based on metal-halide perovskite NCs, in particular, light-emitting diodes and radiation detectors, will be introduced. Opportunities for future research in metal-halide perovskite NCs are provided as well.