Charge Carrier Transport in Neat Thin Films of Phosphorescent Iridium Complexes

• Matsusue Noriyuki

  Department of Physics and Electronics, Osaka Prefecture University

• Suzuki Yuichiro

  Department of Physics and Electronics, Osaka Prefecture University

• Naito Hiroyoshi

  Department of Physics and Electronics, Osaka Prefecture University

抄録

The charge carrier transport properties of neat thin films of red-, green- and blue-phosphorescence Ir complexes have been investigated in terms of time-of-flight transient photocurrent measurement. Bis(2-(2′-benzo[4,5-a]thienyl)pyridinato-N,C^3′)iridium(acetylacetonate) (btp₂Ir(acac)) (red-phosphorescence emitter) and iridium(III) bis[(4,6-di-fluorophenyl)-pyridinato-N,C^2′]picolinate (FIrpic) (blue-phosphorescence emitter) thin films exhibit bipolar charge transport. In contrast, the electron and hole transit signals of fac-tris(2-phenylpyridine)iridium(III) (Ir(ppy)₃) (green-phosphorescence emitter) thin films are unobservable. The charge carrier transport properties of thin films of an Ir-complex-doped 4,4′-N,N′-dicarbazole-biphenyl (CBP) and the appropriateness of FIrpic as a triplet-exciton and hole blocking layer are shown.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 44 (6A), 3691-3694, 2005

  The Japan Society of Applied Physics

キーワード

• iridium complexes
• charge carrier transport
• phosphorescence
• OLED

詳細情報

• CRID: 1390282681243370880
• NII論文ID: 10016440550
• NII論文ID: 130004534146
• NII論文ID: 210000058052
• NII書誌ID: AA10457675
• DOI: 10.1143/jjap.44.3691
• ISSN: 13474065
• ISSN: 00214922
• NDL書誌ID: 7337070
• Web Site: http://id.ndl.go.jp/bib/7337070
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7337070
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.3691
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.3691/pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可