Excitons and Their Efficient Utilization in OLEDs

MA Dongge

doi:10.37188/CJL.20220259

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Excitons and Their Efficient Utilization in OLEDs

Invited Paper | 更新时间：2023-02-16

- Excitons and Their Efficient Utilization in OLEDs
  增强出版
- Chinese Journal of Luminescence Vol. 44, Issue 1, Pages: 174-185(2023)
- 作者机构：
  
  华南理工大学材料科学与工程学院，分子聚集发光中心，高分子光电材料与器件研究所，广东省分子聚集发光重点实验室，发光材料与器件国家重点实验室，广东广州　510640
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(21788102);Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates(2019B030301003);Guangzhou Science & Technology plan project(2020A0505140002)
- DOI：10.37188/CJL.20220259
  CLC： TN312.8
- Published：05 January 2023，
  
  Received：01 July 2022，
  
  Revised：20 July 2022，
- 稿件说明：
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马东阁.OLEDs中的激子及其高效利用[J].发光学报,2023,44(01):174-185.

MA Dongge.Excitons and Their Efficient Utilization in OLEDs[J].Chinese Journal of Luminescence,2023,44(01):174-185.
马东阁.OLEDs中的激子及其高效利用[J].发光学报,2023,44(01):174-185. DOI： 10.37188/CJL.20220259.

MA Dongge.Excitons and Their Efficient Utilization in OLEDs[J].Chinese Journal of Luminescence,2023,44(01):174-185. DOI： 10.37188/CJL.20220259.

摘要

有机发光二极管（OLEDs）是基于有机半导体的发光器件，由于具有自发光、响应速度快、发光颜色可调、轻薄、大面积柔性可弯曲等优点，被认为是新一代的显示和照明技术。OLEDs是通过注入的电子和空穴复合形成激子并辐射发光的过程，因此如何有效利用激子，特别是三线态激子，已经成为OLEDs材料和器件研究的重要课题。其中，如何把三线态激子能量转换成单线态激子，并最终实现100%激子的荧光发射更具有应用价值，最近几年这方面的研究已经取得了显著进展。本文从OLEDs的工作原理和发光过程出发，详细介绍了制备高效率荧光OLEDs的有效方法及其最新进展，并对未来发展方向进行了展望，为OLEDs材料和器件的研究提供重要参考。

Abstract

Organic light emitting diodes（OLEDs） are light-emitting devices based on organic semiconductors. They are considered as a new generation of display and lighting technology because of their advantages such as self-illumination， fast response， adjustable light-emitting color， lightness， large area flexibility and foldability，

etc

. The emission of OLEDs is a process of the radiative decay of excitons formed by recombination of injected electrons and holes. Therefore， how to effectively use excitons， especially the use of triplet excitons， has become an important topic in the research on materials and devices of OLEDs. Among them， how to convert triplet exciton energies into singlet excitons and finally realize the fluorescence emission of 100% excitons has more application value. In recent years， significant progresses have been made in this field. This paper introduces the effective methods for the fabrication of high efficiency fluorescence OLEDs in detail based on working mechanism and luminescence processes of OLEDs and their latest progresses， and prospects the future development directions， which provide an important reference for the research on materials and devices of OLEDs.

关键词

有机发光激子高效利用单线态和三线态

Keywords

organic light-emittingexcitonsefficient utilizationsinglet and triplet states

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