Journal
JOURNAL OF LUMINESCENCE
Volume 233, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jlumin.2020.117880
Keywords
Cationic iridium complexes; Deep-blue emission; Crystal structure; Luminescent properties
Categories
Funding
- National Natural Science Foundation of China [U1704140]
- Program for Science and Technology Innovation Talents in Universities of Henan Province [19HASTIT034]
Ask authors/readers for more resources
In this work, three deep-blue emitting cationic iridium complexes Ir1-Ir3 with high luminescence quantum yields and color purity have been reported, showing great potential for use in light-emitting electrochemical cells and solution-processable organic light-emitting diodes.
In this work, we report three deep-blue emitting cationic iridium complexes Ir1-Ir3 with 2',6'-difluoro-2,3'-bipyridine cyclometalated ligand and pyrazole-type ancillary ligands. Synthesis, crystal structure, photophysical and electrochemical properties of Ir1-Ir3 are studied in detail. Ir1-Ir3 exhibit efficient phosphorescence emissions at 439, 438 and 437 nm with CIE 1931 coordinates of (0.14, 0.12), (0.14, 0.12) and (0.14, 0.13), and luminescence quantum yields of 0.35, 0.27 and 0.50 in CH2Cl2 solutions, respectively, which are among the highest levels of ever reported cationic iridium(III) complexes emitting deep-blue light. High luminescence quantum yields, excellent color purity and short lifetimes demonstrates the great potential of Ir1-Ir3 for lightemitting electrochemical cells (LECs) and solution-processable organic light-emitting diodes (OLEDs) as efficient blue emitters.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available