Perovskite quantum dots for light-emitting devices,Nanoscale

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Perovskite quantum dots for light-emitting devices
Nanoscale ( IF 5.8 ) Pub Date : 2019-09-26 , DOI: 10.1039/c9nr06191f
Yun-Fei Li _{1,

2,

3,

4,

5} , Jing Feng _{6,

7,

8,

9,

10} , Hong-Bo Sun _{6,

7,

8,

9,

10}

Affiliation

Perovskite quantum dots (QDs) have been hotly pursued in recent decades owing to their quantum confinement effect and defect-tolerant nature. Their unique optical properties, such as high photoluminescence quantum yield (PLQY) approaching unity, narrow emission bandwidth, tunable wavelength spanning the entire visible spectrum, and compatibility with flexible/stretchable electronics, render perovskite QDs promising for next-generation solid lighting sources and information displays. Herein, the advances in perovskite QDs and their applications in LEDs are reviewed. Strategies to fabricate efficient perovskite QDs and device configuration, including material composition design, synthetic methods, surface engineering, and device optimization, are investigated and highlighted. Moreover, the main challenges in perovskite QDs of instability and toxicity (lead-based) are identified, while the solutions undertaken with respect to composition engineering, device encapsulation, and lead-replacement QDs are demonstrated. Meanwhile, perspectives for the further development of perovskite QDs and corresponding LEDs are presented.

中文翻译：

发光器件的钙钛矿量子点

钙钛矿量子点（QDs）由于其量子限制效应和缺陷耐受性而在近几十年来一直受到人们的热烈追捧。钙钛矿量子点具有独特的光学特性，例如接近统一的高光致发光量子产率（PLQY），窄的发射带宽，可调谐波长跨越整个可见光谱以及与柔性/可拉伸电子器件的兼容性，这些都使钙钛矿QD有望成为下一代固体光源和信息。显示。本文对钙钛矿量子点的发展及其在LED中的应用进行了综述。研究并重点介绍了制造高效钙钛矿量子点和设备配置的策略，包括材料成分设计，合成方法，表面工程和设备优化。而且，确定了钙钛矿不稳定性和毒性（基于铅）的QD的主要挑战，同时还展示了针对成分工程，器件封装和铅置换QD所采取的解决方案。同时，提出了钙钛矿量子点和相应的发光二极管的进一步发展的前景。

更新日期：2019-10-25

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