Highly-Efficient Phosphorescent Organic Light-Emitting Diodes with Horizontal Oriented Iridium(III) Complexes
- Title
- Highly-Efficient Phosphorescent Organic Light-Emitting Diodes with Horizontal Oriented Iridium(III) Complexes
- Authors
- SOHN, SUN YOUNG; JEON, HJ; AHN, HYUNGJU; JUNG, SUNGJUNE; KWON, S-K; Kim, Y-H
- Date Issued
- 2020-10-06
- Publisher
- 한국고분자학회
- Abstract
- The synthesized green iridium(III) complex dopants with ancillary ligands of homoleptic or heteroleptic structure were characterized. The green phosphorescent OLEDs with 2,2’,6,6’-tetramethylheptanedionate (tmd) dopant exhibit higher device efficiencies of 20.9 %, 77.8 cd/A, 69.8 lm/W than that of the conventional Ir(ppy)3 emitter of 17.6 %, 60.2 cd/A, 52.6 lm/W. The high efficiency OLEDs containing tmd ligand can be explained due to preferred dipole orientation in horizontal direction which shows the relatively strong intensity at χ=0 and narrow azimuthal intensity distribution in 2D-GIWAXD. This research supported by NRF-2019R1I1A1A01064203 of Korea grant.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/105920
- ISSN
- 2384-0307
- Article Type
- Conference
- Citation
- 2020 한국고분자학회 추계학술대회, page. 106 - 106, 2020-10-06
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