Blue perovskite materials for light-emitting diodes

Yu-shuai XU; Hai-long WANG; liang CHEN; Zhi-yuan XIE

doi:10.37188/CJLCD.2020-0215

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Blue perovskite materials for light-emitting diodes

Perovskite Light-Emitting Materials and Devices | 更新时间：2021-02-01

- Blue perovskite materials for light-emitting diodes
- Chinese Journal of Liquid Crystals and Displays Vol. 36, Issue 1, Pages: 113-122(2021)
- 作者机构：
  
  1.中国科学院长春应用化学研究所高分子物理与化学国家重点实验室, 吉林长春 130022
  2.中国科学技术大学应用化学与工程学院, 安徽合肥 230027
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;National Natural Science Foundation of China;National Natural Science Foundation of China
- DOI：10.37188/CJLCD.2020-0215
  CLC： TP394.1;TN383.1
- Received：28 August 2020，
  
  Accepted：21 October 2020，
  
  Published：2021-01
- 稿件说明：
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Yu-shuai XU, Hai-long WANG, liang CHEN, et al. Blue perovskite materials for light-emitting diodes[J]. Chinese journal of liquid crystals and displays, 2021, 36(1): 113-122.
DOI：

Yu-shuai XU, Hai-long WANG, liang CHEN, et al. Blue perovskite materials for light-emitting diodes[J]. Chinese journal of liquid crystals and displays, 2021, 36(1): 113-122. DOI： 10.37188/CJLCD.2020-0215.

摘要

金属卤化物钙钛矿材料具有带隙可调、半峰宽窄、载流子迁移率高和荧光量子效率高等特点，在照明和显示领域显示出良好的应用潜力。通过对钙钛矿薄膜组分和器件结构的优化，红光和绿光钙钛矿发光二极管（PeLEDs）的外量子效率均已超过了20%，蓝光钙钛矿材料存在稳定性差、深能级陷阱多和电荷注入困难等问题，限制了蓝光PeLEDs的发展。因此，本文从三维钙钛矿材料、准二维钙钛矿材料和钙钛矿量子点入手，综述了这3种蓝光材料如何通过解决上述问题来提升相应器件的性能，对蓝光PeLEDs面临的机遇和挑战进行了总结和展望。

Abstract

Metal halide perovskite materials show the promising application prospects in solid lighting and display

owing to their tunable band-gap

narrow emission

high carrier mobility

and high photoluminescence quantum yield. The external quantum efficiencies of red and green perovskite emitting-diodes (PeLEDs) have exceeded 20% by optimizing perovskite film composition and device structure. Compared with the red and green PeLEDs

the development of blue PeLEDs is far lagging behind

as a result of the wide bandgap blue perovskite emitters possess poor stability

high defect-state density

and poor charge injection ability. Therefore

this article reviews recent methods to solve these problems in three main perovskite blue emitters

including three-dimensional perovskite

quasi-two-dimensional perovskite

and perovskite quantum dots. Finally

the opportunities and challenges of blue PeLEDs have prospected.

关键词

Keywords

references

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