Post-Synthetic Surface Treatment of Perovskite Nanocrystals for Highly Efficient Light-Emitting Diodes
Post-Synthetic Surface Treatment of Perovskite Nanocrystals for Highly Efficient Light-Emitting Diodes
复制标题
用于高效发光二极管的钙钛矿纳米晶体的合成后表面处理
DOI：
10.11370/isj.60.606
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Chiba Takayuki、Kido Junji
中科院分区：
文献类型：
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作者：
Cheng Yu-Hong;Ebe Hinako;Chiba Takayuki、Kido Junji
近年来，金属卤化物钙钛矿由于其高色纯度和可调谐性而成为最有前途的发光材料之一。此外，其良好的光电特性使其能够用于各种各样的应用，如光致发光和发光二极管（LED）。特别是，明亮的发光胶体纳米晶体（NC）在LED应用中显示出相当大的潜力。然而，钙钛矿NC的低稳定性和耐久性阻碍了其商业化。因此，钙钛矿纳米材料的合成后表面改性已成为不仅实现优异光学性能而且实现高效率LED的重要策略。配体交换、阴离子交换、金属掺杂和新型纯化工艺等技术已被证明可以钝化表面缺陷并从NC中去除杂质。在这篇综述中，我们总结了我们最近的工作后合成的表面改性处理的钙钛矿NC实现高效LED。
In recent years, metal halide perovskites have emerged as one of the most promising light-emitting materials owing to their high color purity and tunability. In addition, their favorable optoelectrical properties have enabled their use in a wide variety of applications, such as photovoltaics and light-emitting diodes (LEDs). In particular, bright luminescent colloidal nanocrystals (NCs) show considerable potential for LEDs applications. However, the low stability and durability of perovskite NCs hamper their commercialization. Therefore, post-synthetic surface modification of perovskite NCs has become an important strategy for achieving not only excellent optical properties but also high-efficiency LEDs. Techniques such as ligand exchange, anion exchange, metal doping, and novel purification processes have been demonstrated to passivate surface defects and remove impurities from the NCs. In this review, we summarize our recent work on post-synthetic surface modification treatments of perovskite NCs toward achieving highly efficient LEDs.