完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Hsu, Fang-Ming | en_US |
dc.contributor.author | Chien, Chen-Han | en_US |
dc.contributor.author | Shu, Ching-Fong | en_US |
dc.contributor.author | Lai, Chin-Hung | en_US |
dc.contributor.author | Hsieh, Cheng-Chih | en_US |
dc.contributor.author | Wang, Kang-Wei | en_US |
dc.contributor.author | Chou, Pi-Tai | en_US |
dc.date.accessioned | 2014-12-08T15:08:44Z | - |
dc.date.available | 2014-12-08T15:08:44Z | - |
dc.date.issued | 2009-09-09 | en_US |
dc.identifier.issn | 1616-301X | en_US |
dc.identifier.uri | http://dx.doi.org/10.1002/adfm.200900703 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/6683 | - |
dc.description.abstract | Highly efficient blue electrophosphorescent organic light-emitting diodes incorporating a bipolar host, 2,7-bis(diphenylphosphoryl)-9-[4-(N,N-diphenylamino)phenyl]-9-phenylfluorene (POAPF), doped with a conventional blue triplet emitter, iridium(III) bis[(4,6-difluorophenyl)pyridinato-N,C(2)]picolinate (FIrpic) are fabricated. The molecular architecture of POAPF features an electron-donating (p-type) triphenylamine group and an electron-accepting (n-type) 2,7-bis(diphenylphosphoryl)fluorene segment linked through the sp(3)-hybridized C9 position of the fluorene unit. The lack of conjugation between these p- and n-type groups endows POAPF with a triplet energy gap (ET) of 2.75 eV, which is sufficiently high to confine the triplet excitons on the blue-emitting guest. In addition, the built-in bipolar functionality facilitates both electron and hole injection. As a result, a POAPF-based device doped with 7 wt% FIrpic exhibits a very low turn-on voltage (2.5 V) and high electroluminescence efficiencies (20.6% and 36.7 lm W(-1)). Even at the practical brightnesses of 100 and 1000cd m(-2), the efficiencies remain high (20.2%/33.8 lm W(-1) and 18.8%/24.3 lm W(-1), respectively), making POAPF a promising material for use in low-power-consumption devices for next-generation flat-panel displays and light sources. | en_US |
dc.language.iso | en_US | en_US |
dc.title | A Bipolar Host Material Containing Triphenylamine and Diphenylphosphoryl-Substituted Fluorene Units for Highly Efficient Blue Electrophosphorescence | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1002/adfm.200900703 | en_US |
dc.identifier.journal | ADVANCED FUNCTIONAL MATERIALS | en_US |
dc.citation.volume | 19 | en_US |
dc.citation.issue | 17 | en_US |
dc.citation.spage | 2834 | en_US |
dc.citation.epage | 2843 | en_US |
dc.contributor.department | 應用化學系 | zh_TW |
dc.contributor.department | Department of Applied Chemistry | en_US |
dc.identifier.wosnumber | WOS:000270001000018 | - |
dc.citation.woscount | 98 | - |
顯示於類別: | 期刊論文 |