Use of Poly(9-vinylcarbazole) as Host Material for Iridium Complexes in High-Efficiency Organic Light-Emitting Devices.

• Yang Moon-Jae

  Department of Applied Science for Electronics and Materials, Graduate School of Engineering Sciences, Kyushu University,<BR> Kasuga, Fukuoka 816-8580, Japan

• Tsutsui Tetsuo

  Department of Applied Science for Electronics and Materials, Graduate School of Engineering Sciences, Kyushu University,<BR> Kasuga, Fukuoka 816-8580, Japan

抄録

Using poly(9-vinylcarbazole)(PVCz) as a host material for tris(2-phenylpyridine)iridium (Ir(ppy)₃) guest emitter, double-layer and triple-layer organic light-emitting devices were fabricated. Tris(8-hydroxyquinolino)aluminum (Alq₃) and 1,3-bis[(4-tert-butylphenyl)-1,3,4-oxadiazolyl]phenylene (OXD-7) were used for electron-transporting layers. The insertion of 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) as a hole-blocking layer was also tested. The double-layer device composed of PVCz doped with 6.8 wt% Ir(ppy)₃ and OXD-7 gave the highest external quantum efficiency of 7.5% and power luminous efficiency of 5.8 lm/W at the luminance of 106 cd/m² (current density of 0.40 mA/cm² and drive voltage of 14.5 V).

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 39 (8A), L828-L829, 2000

  The Japan Society of Applied Physics

キーワード

• organic light-emitting device
• triplet-state emission
• iridium complexes
• external quantum efficiency
• poly(9-vinylcarbazole)

詳細情報

• CRID: 1390282681227805312
• NII論文ID: 110004093414
• NII論文ID: 210000048625
• NII書誌ID: AA10650595
• DOI: 10.1143/jjap.39.l828
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.39.L828
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.39.L828/pdf
• 本文言語コード: en
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