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The clarification of the emission mechanism due to the energy transfer for the dye-doped electroluminescent devices

Research Project

Project/Area Number 13650352
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Electronic materials/Electric materials
Research InstitutionShibaura Institute of Technology

Principal Investigator

NAGATOMO Takao  Shibaura Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (70052868)

Co-Investigator(Kenkyū-buntansha) YAMAGUCHI Masaki  Shibaura Institute of Technology, Faculty of Engineering, Assistant Professor, 工学部, 専任講師 (70311975)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2002: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2001: ¥1,800,000 (Direct Cost: ¥1,800,000)
Keywordsorganic electroluminescence device / dye-doped device / emission mechanism / emission due to energy transfer / assist / phosphorescence material / indium complex / dopant
Research Abstract

In this study, the luminescence properties of electroluminescence devices which were doped dopant over two such as the organic dyes and the luminescence materials in the emitting layer and the hole transport layer were examined
1. The improvement of the emitting layer. ITO/PVCz:DCM1+Be(PIP)_2/Alq_3/Al devices were made by using PVCz doped of DCM1 an Be(PIP)_2 as the emitting layer. Be(PIP)_2 is not directly radiated. But, Be(PIP)_2 assists the electroluminescence from another dopant
2. The case in which irridium complex which is the phosphorescence material was doped in the luminous layer. ITO/PVCz:Ir(ppy)_3/Alq_3/Al devices were made by using PVCz doped irridium complex Ir(ppy)_3 which is the phosphorescence material was doped in the luminous layer. When iridium complex was doped, the luminous efficiency increases, and the luminous efficiency 1.8 Im/W at the drive voltage of 9.2V 1.8. The relationship between host material and guest material, and the contribution of the second dopant for the electroluminescence devices are not clarified sufficiently
ITO/α-NPD/CPB:Ir(ppy)_3/BCP/Alq_3/MgAg devices were made by using CPB doped irri-dium complex of 17 wt.% as the emitting layer, α-NPD as the hole transport layer, BCP as the hole brooking layer, and Alq_3 as the electron transport layer. When the thickness of α-NPD is 40nm, the luminous efficiency was 36 Im/W at the applied voltage of 10V. It is necessary to study the energy confinement for the electroluminescence devices
It is necessary to study the energy transfer process between triplet and singlet to clarify the emission mechanism

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report

Research Products

(16 results)

All Other

All Publications (16 results)

  • [Publications] 長友 隆男: "新しい高効率光源材料・デバイス「有機EL」"電気学会技術報告第847号. 847. (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 山口 正樹, 長友 隆男: "分子分散型有機電界発光素子の白色発光"電気学会 光応用・視覚研究会資料. Vol.LAV-01-10. 25-29 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 田中 哲也, 長島 奨, 山口 正樹, 長友 隆男: "イリジウム錯体を用いた有機EL素子"電子情報通信学会・有機エレクトロニクス研究会・資料(信学技報). Vol.OME 2002-10. 13-18 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tetsuya TANAKA, Susumu NAGASHIMA, Takao NAGATOMO: "Organic Light-Emitting Devices with Fluorescent and Phosphorescent Dopants"Abstracts of Second International Conference on Molecular Electronics and Bioelectronics (M & BE2). P2-30. 67 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 田中哲也, 長島 奨, 菅原亮介, 土屋孝裕, 元崎 良, 長友隆男: "イリジウム錯体を用いた白色有機EL素子の作製"第50回応用物理学関係連合講演会講演会(於神奈川大学)講演論文集(講演番号28p-A-2). 28p-A-2. 1411 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Takao,Nagatomo: "Organic Electroluminescence"The Institute of Electrical Engineers of Japan, Technical Committee of Light Applications and Visual Science. Vol.847. 8-ll (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Masaki,Yamaguchi, Takao,Nagatomo: "White-Light-Emitting Doped-Type Organic Electrolumine-scence Devices"The Meeting on Light Application and Visual Science (The Institute of Electri-cal Engineers of Japan). Vol.LAV-01-10. 25-29 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tetsuya,Tanaka, Susumu,Nagashima, Masaki,Yamaguchi, Takao,Nagatomo: "Organic Light-Emitting Devices with Indium-Complex"The Meeting on Organic Molecular Electronics (The Institute of Electronics,Information and Communication Engineers). Vol.OME2002-10. 13-18 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tetsuya,TANAKA, Susumu,NAGASHIMA, Takao,NAGATOMO: "Organic Light-Emitting Devices with Fluorescent and Phosphorescent Dopants"Abstracts of Second International Conference on Molecular Electronics and Bioelectronics (M&BE2). 67 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tetsuya,Tanaka, Susumu,Nagashima, Ryosuke,Sugawara, Takahiro,Tsuchiya, Ryo,Motosaki, Takao,Nagatomo: "Preparation of White Color Organic Electroluminescence Devices Using Indium Complex"Extended Abstracts (The 50th Spring Meeting, 2003),The Japan Society of Applied Physics and Related Societies.. 28p-A-2. 1411 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 田中 哲也, 長島 奨, 山口 正樹, 長友 隆男: "イリジウム錯体を用いた有機EL素子"電子情報通信学会・有機エレクトロニクス研究会・資料(信学技報). Vol.OME2002-10. 13-18 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Tetsuya TANAKA, Susumu NAGASHIMA, Takao NAGATOMO: "Organic Light-Emitting Devices with Fluorescent and Phosphorescent Dopants"Abstracts of Second International Conference on Molecular Electronics and Bioelectronics(M&BE2). P2-30. 67 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 田中哲也, 長島 奨, 菅原亮介, 土屋孝裕, 元崎 良, 長友隆男: "イリジウム錯体を用いた白色有機EL素子の作製"第50回応用物理学関係連合講演会(於神奈川大学)講演論文集(講演番号28p-A-2). 28p-A-2. 1411 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 長友 隆男: "有機EL"「新しい高効率光源材料・デバイス」電気学会技術報告. 第847号. 8-11 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 山口 正樹, 長友 隆男: "分子分散型有機電界発光素子の白色発光"電気学会 光応用・視覚研究会資料. Vol.LAV-01-10. 25-29 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 田中 哲也, 長島 奨, 山口 正樹, 長友 隆男: "イリジウム錯体を用いた有機EL素子"有機エレクトロニクス研究会資料. Vol.OME-02-. (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-03-31   Modified: 2016-04-21  

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