journal article·2026-04-28

White Organic Light-Emitting Diodes Based on Blue and Yellow Thermally Activated Delayed Fluorescence Cu(I) Complexes

Qi Feng, Xue-Qi Wang, Shu-Jia Zheng, Ke-Die Li, Chun-Fang Zhang, Shi-Ying Duan, Xiao Zhang, Jun-Ming Li, Tian-Yi Li, Yuan Liu

Chemistry of Materials· Volume 38· Issue 8
Publisher page

Abstract

The progress of white light-emitting diodes (WOLEDs) holds capability for the production of high-performance surface light sources, but the commercialization is significantly delayed owing to the usage of expensive noble metal phosphorescent complexes. Recently, a series of thermally activated delayed fluorescent (TADF) Cu(I) complexes featuring carbene–Cu(I)–amine two-coordinate geometries exhibit promising electroluminescent (EL) properties in OLEDs. With 6-trifluoromethyl-indole, 3-cyano-carbazole, and 3,6-dimethoxy-carbazole, blue and yellow TADF Cu(I) complexes are prepared, exhibiting decent PL quantum yield and short decay lifetimes. Taking advantages of their broad emission spectra and high thermal stabilities, WOLEDs are designed based on blue and yellow TADF Cu(I) complexes. Pure white and warm white illuminations can be obtained by tuning the combination ratios of the emitters. A high external quantum efficiency over 13%, a decent color-rendering index (CRI) over 80, and stable white emission in a wide range of luminances demonstrate the potential of these low-cost emissive dopants in the field of WOLEDs.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Organic Light-Emitting Diodes Research · Luminescence and Fluorescent Materials · Magnetism in coordination complexes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Instrument Science and Optoelectronic Engineering, Beijing Information Science and Technology University, Xiaoying East Road 12, Beijing 100192, China

Department of Fundamental Physical Chemistry, School of Chemistry and Biology Engineering, University of Science and Technology Beijing, Xue Yuan Road 30, Beijing 100083, China

MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering

Harbin Institute of Technology

Beijing Key Laboratory for Sensors, School of Science

Beijing Information Science and Technology University

Funding

China Association for Science and Technology · Natural Science Foundation of Beijing Municipality · National Natural Science Foundation of China · Beijing Municipal Education Commission · Changping District Science and Technology Committee

References (34)

Show source-provided references
1. 10.1063/1.9879910.1063/1.98799 ↗
2. 10.1063/1.140958210.1063/1.1409582 ↗
3. 10.1038/3500154110.1038/35001541 ↗
4. 10.1038/nature1168710.1038/nature11687 ↗
5. 10.1021/cr400704v10.1021/cr400704v ↗
6. 10.1063/1.143211010.1063/1.1432110 ↗
7. 10.1126/science.267.5202.133210.1126/science.267.5202.1332 ↗
8. 10.1038/nature0800310.1038/nature08003 ↗
9. 10.1002/adfm.20080150310.1002/adfm.200801503 ↗
10. 10.1103/RevModPhys.85.124510.1103/RevModPhys.85.1245 ↗
11. 10.1038/nature0464510.1038/nature04645 ↗
12. 10.1002/adma.20100225410.1002/adma.201002254 ↗
13. 10.1002/adma.20090098310.1002/adma.200900983 ↗
14. 10.1063/1.355890610.1063/1.3558906 ↗
15. 10.1021/ja100457510.1021/ja1004575 ↗
16. 10.1021/ja202965y10.1021/ja202965y ↗
17. 10.1021/ic200811a10.1021/ic200811a ↗
18. 10.1126/science.aah434510.1126/science.aah4345 ↗
19. 10.1021/acs.chemrev.3c0076110.1021/acs.chemrev.3c00761 ↗
20. 10.1126/science.aav286510.1126/science.aav2865 ↗
21. 10.1021/jacs.9b0365710.1021/jacs.9b03657 ↗
22. 10.1039/D2TC00163B10.1039/D2TC00163B ↗
23. 10.1039/D0MH00276C10.1039/D0MH00276C ↗
24. 10.1002/anie.20221719510.1002/anie.202217195 ↗
25. 10.1021/jacs.8b1239710.1021/jacs.8b12397 ↗
26. 10.1038/s41467-020-15369-810.1038/s41467-020-15369-8 ↗
27. 10.1021/jacs.0c0223410.1021/jacs.0c02234 ↗
28. 10.1021/acsami.0c2210910.1021/acsami.0c22109 ↗
29. 10.1002/anie.20220398210.1002/anie.202203982 ↗
30. 10.1002/anie.20220945110.1002/anie.202209451 ↗
31. 10.1002/anie.20241929010.1002/anie.202419290 ↗
32. 10.1002/adom.20230333310.1002/adom.202303333 ↗
33. 10.1021/jacs.3c0282510.1021/jacs.3c02825 ↗
34. 10.1016/j.ccr.2016.06.01610.1016/j.ccr.2016.06.016 ↗