Citation: Sihai WU, Mengjiao XU, Jiancheng CHEN, Xiaoxiong WU, Ze ZHANG, Dianxue MA, Yuwu ZHONG. Research progress on metal complex-based solution-processed organic light-emitting diodes[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(11): 2259-2274. doi: 10.11862/CJIC.20260125 shu

Research progress on metal complex-based solution-processed organic light-emitting diodes

Sihai WU ^{1, 2,,} ,
Mengjiao XU ¹ ,
Jiancheng CHEN ³ ,
Xiaoxiong WU ¹ ,
Ze ZHANG ⁴ ,
Dianxue MA ⁴ ,
Yuwu ZHONG ^4,,

1.
School of Medicine, Huaqiao University, Quanzhou, Fujian 362021, China
2.
Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Medicine, Huaqiao University, Xiamen, Fujian 361021, China
3.
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
4.
Institute of Molecular Engineering Plus, College of Chemistry, Fuzhou University, Fuzhou 350108, China

Corresponding author: Sihai WU, wusihai@hqu.edu.cn Yuwu ZHONG, zhongyuwu@fzu.edu.cn
Received Date: 13 April 2026
Revised Date: 17 September 2026

Figures(9)

Due to their low power consumption, wider viewing angle, fast response, low driving voltage, and remarkable flexibility, organic light-emitting diodes (OLEDs) have been the focus of intensive research activities both in industry and academia. Compared to the vacuum evaporation method, the solution-processable technique has several advantages such as operational simplicity, low cost, and large-area device manufacture, which is crucial to its commercial applications. Metal complexes are one of the most promising emitters to construct high-performance solution-processed OLEDs because of their high photoluminescence quantum yields (PLQYs), easily tunable excited-state properties, and good chemical stability. This review briefly summarizes the design strategies for the synthesis of metal complexes, in particular iridium, platinum, gold, and other metal complexes, and their applications in conventional and large-area solution-processed OLEDs. In addition, the current status, challenges, and future research prospects in the studies of metal complex-based solution-processed OLEDs are discussed, which is of interest and importance to the development of metal complex-based high-performance solution-processed OLEDs in the future.
- organic light-emitting diodes,
- solution-processed method,
- metal complexes,
- polypyridyl ligand,
- photophysical properties
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