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Article: High-efficiency white light emission using a phosphorescent sensitizer in organic light-emitting devices

TitleHigh-efficiency white light emission using a phosphorescent sensitizer in organic light-emitting devices
Authors
KeywordsPhosphorescent sansitizer
White light
High efficiency
Issue Date2004
Citation
Optical and Quantum Electronics, 2004, v. 36, n. 7, p. 659-664 How to Cite?
AbstractWe have fabricated white organic light-emitting devices by using the phosphorescent material fac tria (2-phenylpyridine) iridium [Ir(ppy 3)] as a sensitizer, as a result, the efficiency of these devices is improved dramatically. Ir(ppy)3 and the fluorescent dye 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl) (DCITB) are co-doped into 4,4′-N,N′-dicsrbazole-biphenyl (CBP) host, whose thickness affects both color and efficiency of the devices. Tris (8-hydroxyquincline) aluminum (Alq) and 2,9-dimethyl-4,7-diphenyl-1,10- phenanthroline (bathocuproine or BCP) are used as electron-transporting and exciton-blockiag layers, respectively, and N,N′-diphenyl-N,N′-bis(1. naphthyl)-(1,1′-biphenyl)-4,4′diamine (NPB) as a blue light-emitting as well as hole-transporting layer. The maximum efficiencies of the devices with 15 and 20 nm co-doped BCP tuning layer are 7.5 and 8.6 cd/A, respectively, and the former presents fairly pure white emission with CIE coordinates of (0.33, 0.32) at 10 V, which is very stable at various biases (10 19V).
Persistent Identifierhttp://hdl.handle.net/10722/225870
ISSN
2015 Impact Factor: 1.29
2015 SCImago Journal Rankings: 0.419

 

DC FieldValueLanguage
dc.contributor.authorCheng, G.-
dc.contributor.authorZaho, Y.-
dc.contributor.authorXie, W.-
dc.contributor.authorMa, Y.-
dc.contributor.authorLiu, S.-
dc.date.accessioned2016-05-23T02:22:00Z-
dc.date.available2016-05-23T02:22:00Z-
dc.date.issued2004-
dc.identifier.citationOptical and Quantum Electronics, 2004, v. 36, n. 7, p. 659-664-
dc.identifier.issn0306-8919-
dc.identifier.urihttp://hdl.handle.net/10722/225870-
dc.description.abstractWe have fabricated white organic light-emitting devices by using the phosphorescent material fac tria (2-phenylpyridine) iridium [Ir(ppy 3)] as a sensitizer, as a result, the efficiency of these devices is improved dramatically. Ir(ppy)3 and the fluorescent dye 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl) (DCITB) are co-doped into 4,4′-N,N′-dicsrbazole-biphenyl (CBP) host, whose thickness affects both color and efficiency of the devices. Tris (8-hydroxyquincline) aluminum (Alq) and 2,9-dimethyl-4,7-diphenyl-1,10- phenanthroline (bathocuproine or BCP) are used as electron-transporting and exciton-blockiag layers, respectively, and N,N′-diphenyl-N,N′-bis(1. naphthyl)-(1,1′-biphenyl)-4,4′diamine (NPB) as a blue light-emitting as well as hole-transporting layer. The maximum efficiencies of the devices with 15 and 20 nm co-doped BCP tuning layer are 7.5 and 8.6 cd/A, respectively, and the former presents fairly pure white emission with CIE coordinates of (0.33, 0.32) at 10 V, which is very stable at various biases (10 19V).-
dc.languageeng-
dc.relation.ispartofOptical and Quantum Electronics-
dc.subjectPhosphorescent sansitizer-
dc.subjectWhite light-
dc.subjectHigh efficiency-
dc.titleHigh-efficiency white light emission using a phosphorescent sensitizer in organic light-emitting devices-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1023/B:OQEL.0000034727.28657.76-
dc.identifier.scopuseid_2-s2.0-3242787224-
dc.identifier.volume36-
dc.identifier.issue7-
dc.identifier.spage659-
dc.identifier.epage664-

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