Abstract

We developed ultra high efficiency green organic light-emitting devices (OLEDs) using a novel electron transport material containing dipyridylphenyl moieties and green phosphorescent emitter, fac tris(2-phenylpyridine)iridium, Ir(ppy)3. An OLED with a simple structure of glass/indium–tin oxide/polymer buffer layer/arylamine derivative as a hole transport layer/Ir(ppy)3-doped dicarbazolylbiphenyl as an emitter layer/dipyridylphenyl derivative as an electron transport layer/LiF/Al exhibited low drive voltages, which were 2.5 V at 100 cd/m2 and 2.9 V at 1000 cd/m2. High external quantum efficiencies of 29% at 100 cd/m2 and 26% at 1000 cd/m2 were also observed, which lead to the ultra high power efficiencies of 133 lm/W at 100 cd/m2 and 107 lm/W at 1000 cd/m2.

Keywords

IridiumOLEDCommon emitterPhosphorescenceMaterials scienceIndium tin oxideQuantum efficiencyDopingLayer (electronics)Green-lightOptoelectronicsChemistryNanotechnologyOpticsFluorescenceOrganic chemistryCatalysis

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Publication Info

Year
2006
Type
article
Volume
46
Issue
1L
Pages
L10-L10
Citations
377
Access
Closed

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Cite This

Daisaku Tanaka, Hisahiro Sasabe, Yanjun Li et al. (2006). Ultra High Efficiency Green Organic Light-Emitting Devices. Japanese Journal of Applied Physics , 46 (1L) , L10-L10. https://doi.org/10.1143/jjap.46.l10

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DOI
10.1143/jjap.46.l10

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Data completeness: 77%