Journal
ADVANCED MATERIALS
Volume 22, Issue 16, Pages 1872-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200903321
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- Ministry of Knowledge Economy (MKE), Republic of Korea [B008552] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Highly efficient deep-blue-phosphorescent organic light-emitting diodes have been developed using bipolar-type high-triplet-energy host materials with a carbazole core and two phosphine oxide (PPO21) or phosphine sulfide (PPS21) units. A high quantum efficiency of 19.2% with a deep-blue color coordinate of (0.14,0.16) was achieved in the deep-blue device with PPO21 as a host material (see figure).
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