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A highly efficient wide-band-gap host material for blue electrophosphorescent light-emitting devices
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Whang, Dong Ryeol | - |
dc.contributor.author | You, Youngmin | - |
dc.contributor.author | Kim, Se Hun | - |
dc.contributor.author | Jeong, Won-Ik | - |
dc.contributor.author | Park, Young-Seo | - |
dc.contributor.author | Kim, Jang-Joo | - |
dc.contributor.author | Park, Soo Young | - |
dc.date.accessioned | 2009-08-12T05:44:13Z | - |
dc.date.available | 2009-08-12T05:44:13Z | - |
dc.date.issued | 2007-12-03 | - |
dc.identifier.citation | Appl. Phys. Lett. 91, 233501 (2007) | en |
dc.identifier.issn | 0003-6951 (print) | - |
dc.identifier.issn | 1077-3118 (online) | - |
dc.identifier.uri | https://hdl.handle.net/10371/7012 | - |
dc.description.abstract | We report on an efficient wide-band-gap host material for blue electrophosphorescence devices, namely, 1,2-trans-di-9-carbazolylcyclobutane (DCz). Photophysical studies show that lower-energy excimer formation between the carbazole units can be efficiently suppressed in a DCz film, thus maintaining its high triplet-state energy and inducing an exothermic energy transfer from DCz to iridium(III)bis[(4,6-difluorophenyl)-pyridinato-N,C2]picolinate (FIrpic). Electrophosphorescent devices comprising a FIrpic:DCz emitting layer exhibit a superior performance with a maximum external quantum efficiency of 9.8%, a maximum luminance efficiency of 21.5 cd/A, and a maximum power efficiency of 15.0 lm/W at 0.01 mA/cm2. | en |
dc.description.sponsorship | This work was partly supported by the Korea Science
and Engineering Foundation (KOSEF) through the National Research Laboratory Program funded by the Ministry of Science and Technology (No. 2006-03246), and by Dongwoo FineChem Co. | en |
dc.language.iso | en | - |
dc.publisher | American Institute of Physics | en |
dc.title | A highly efficient wide-band-gap host material for blue electrophosphorescent light-emitting devices | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 황동렬 | - |
dc.contributor.AlternativeAuthor | 유영민 | - |
dc.contributor.AlternativeAuthor | 김세훈 | - |
dc.contributor.AlternativeAuthor | 정원익 | - |
dc.contributor.AlternativeAuthor | 박영서 | - |
dc.contributor.AlternativeAuthor | 김장주 | - |
dc.contributor.AlternativeAuthor | 박수영 | - |
dc.identifier.doi | 10.1063/1.2821116 | - |
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