Deep-blue organic light-emitting diodes based on a doublet <italic style="font-style: italic">d</italic>–<italic style="font-style: italic">f</italic> transition cerium(III) complex with 100% exciton utilization efficiency

Liding Wang; Zifeng Zhao; Ge Zhan; Huayi Fang; Hannan Yang; Tianyu Huang; Yuewei Zhang; Nan Jiang; Lian Duan; Zhiwei Liu; Zuqiang Bian; Zhenghong Lu; Chunhui Huang

doi:10.1038/s41377-020-00395-4

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Deep-blue organic light-emitting diodes based on a doublet d–f transition cerium(III) complex with 100% exciton utilization efficiency

Original Articles

- Deep-blue organic light-emitting diodes based on a doublet d–f transition cerium(III) complex with 100% exciton utilization efficiency
- Deep-blue organic light-emitting diodes based on a doublet d–f transition cerium(III) complex with 100% exciton utilization efficiency
- LSA 2020年9卷第5期页码：1498-1506
- Affiliations：
  
  1.Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing Engineering Technology Research Centre of Active Display, College of Chemistry and Molecular Engineering, Peking University, 100871 Beijing, China
  2.Tianjin Key Lab for Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, 300350 Tianjin, China
  3.Department of Physics, Yunnan University, 2 Cuihu Bei Lu, 650091 Kunming, China
  4.Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, 100084 Beijing, China
- Author bio：
  
  Zhiwei Liu (zwliu@pku.edu.cn)
- Funds：
- DOI：10.1038/s41377-020-00395-4
  中图分类号：
- 纸质出版日期：2020，
  
  网络出版日期：2020-09-08，
  
  收稿日期：2020-04-09，
  
  修回日期：2020-08-24，
  
  录用日期：2020-08-25
- Accepted：
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Deep-blue organic light-emitting diodes based on a doublet d–f transition cerium(III) complex with 100% exciton utilization efficiency[J]. LSA, 2020,9(5):1498-1506.

Wang, L. d. et al. Deep-blue organic light-emitting diodes based on a doublet d–f transition cerium(III) complex with 100% exciton utilization efficiency. Light: Science & Applications, 9, 1498-1506 (2020).
Deep-blue organic light-emitting diodes based on a doublet d–f transition cerium(III) complex with 100% exciton utilization efficiency[J]. LSA, 2020,9(5):1498-1506. DOI： 10.1038/s41377-020-00395-4.

Wang, L. d. et al. Deep-blue organic light-emitting diodes based on a doublet d–f transition cerium(III) complex with 100% exciton utilization efficiency. Light: Science & Applications, 9, 1498-1506 (2020). DOI： 10.1038/s41377-020-00395-4.

摘要

Abstract

Compared to red and green organic light-emitting diodes (OLEDs)

blue OLEDs are still the bottleneck due to the lack of efficient emitters with simultaneous high exciton utilization efficiency (EUE) and short excited-state lifetime. Different from the fluorescence

phosphorescence

thermally activated delayed fluorescence (TADF)

and organic radical materials traditionally used in OLEDs

we demonstrate herein a new type of emitter

cerium(III) complex

Ce-1

with spin-allowed and parity-allowed

–

transition of the c

entre Ce

ion. The compound exhibits a high EUE up to 100% in OLEDs and a short excited-state lifetime of 42 ns

which is considerably faster than that achieved in efficient phosphorescence and TADF emitters. The optimized OLEDs show an average maximum external quantum efficiency (EQE) of 12.4% and Commission Internationale de L'Eclairage (CIE) coordinates of (0.146

0.078).

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references

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Deep-blue organic light-emitting diodes based on a doublet d–f transition cerium(III) complex with 100% exciton utilization efficiency

Deep-blue organic light-emitting diodes based on a doublet d–f transition cerium(III) complex with 100% exciton utilization efficiency

DOI：10.1038/s41377-020-00395-4

摘要

Abstract

关键词

Keywords

references