Blue phosphorescence organic light emitting diodes with trifluorosulfonyl-substituted iridium complexs for preferential horizontal orientation
- Title
- Blue phosphorescence organic light emitting diodes with trifluorosulfonyl-substituted iridium complexs for preferential horizontal orientation
- Authors
- SOHN, SUN YOUNG; JUNG, SUNGJUNE; KWON, SOON-KI; KIM, YUN-HI
- Date Issued
- 2019-04-11
- Publisher
- 한국고분자학회
- Abstract
- New blue iridium complexes consist of trifluoromethyl sulfonyl substituent at 3 position on the phenyl ring, and methyl group at the 4 position of the pyridine group as the main ligand and a picolinate (pic), a picolinate with 3-methylpyridine (mpic) as the ancillary ligand for blue phosphorescence organic light emitting diodes (PHOLEDs) have been synthesized. The device with mpic dopant showed higher current, external quantum, and power efficiency of 7.17 cd/A, 3.7%, and 5.29 lm/W compared to that with the pic dopant (4.03 cd/A, 2.78%, and 3.57 lm/W). These improved properties could be explained by the outcoupling effect by relatively horizontally orientated emitter and preventing self-quenching due to triplet-triplet annihilation.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/98677
- ISSN
- 2384-0307
- Article Type
- Conference
- Citation
- 2019 한국고분자학회 춘계학술대회, page. 70 - 70, 2019-04-11
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