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dc.contributor.author김경헌-
dc.contributor.author람판디-
dc.contributor.author공지훈-
dc.contributor.author이정민-
dc.contributor.author권장혁-
dc.contributor.author이재균-
dc.contributor.author박정환-
dc.date.accessioned2015-12-03T02:09:57Z-
dc.date.available2015-12-03T02:09:57Z-
dc.date.issued201505-
dc.identifier.citationVOL 5, NO 40, 31282-31291-
dc.identifier.issn20462069-
dc.identifier.other45186-
dc.identifier.urihttp://pubs.kist.re.kr/handle/201004/51160-
dc.description.abstractWe report a series of four bipolar host materials with indenocarbozole and biphenyl pyrimidine moieties for efficient phosphorescent green organic light-emitting diodes (OLEDs). All four host materials possess excellent electro-optical properties as well as good thermal and morphological stability due to their high glass transition temperature of 129 degrees C and decomposition temperature of 363-401 degrees C. The new materials also show good triplet energy of 2.76 eV and excellent charge carrier transport properties. The fabricated OLED device with 11-[3-(2,6-diphenyl-pyrimidin-4-yl)-phenyl]-12,12-dimethyl-11,12-dihydro-11-aza-indeno[2,1-a]fluorene (mDPPICz1) as green host shows maximum current and power efficiency as high as 75.8 cd A(-1) and 87.1 lm W-1 at 1000 cd m(-2), and an almost ideal external quantum efficiency of 21.7%.-
dc.publisherRSC advances-
dc.subjectOLEDs-
dc.subjectbiphenyl pyrimidine-
dc.subjectindenocarbozole-
dc.titleNew bipolar host materials for high performance of phosphorescent green organic light-emitting diodes-
dc.typeArticle-
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