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Development of oxide electroluminescent devices using energy transfer from an electron-hole pair to an emission center

Research Project

Project/Area Number 16K06717
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Inorganic materials/Physical properties
Research InstitutionGunma University

Principal Investigator

Kyomen Toru  群馬大学, 大学院理工学府, 教授 (10323841)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywordsエレクトロルミネッセンス / 酸化物 / 薄膜 / セラミックス / 蛍光 / 化学溶液堆積法
Outline of Final Research Achievements

The purpose of the present study is to develop plane light-emitting devices with high-luminance and high-efficiency using oxide phosphors stable in air by using a sol-gel and firing method. In the present study, effects of impurity doping and firing conditions were investigated. As a result, 1,200 cd/m2 was obtained by firing at 1000 ℃ and Al doping. In addition, it was proposed that the light emission originates from formation of pn junction in the oxide phosphor resulting from electromigration of oxide ions.

Academic Significance and Societal Importance of the Research Achievements

大気中の酸素や水分で劣化しない酸化物蛍光体を用いた発光素子が実現できれば,封止不要の素子が実現できる。また,溶液塗布・焼成法は大面積化,低コスト化,パターニングに有利である。本研究目的が達成されれば,耐久性が高く,大面積の発光素子を低コストで作製できるようになる。そのためには高輝度化・高効率化が不可欠であるが,本研究によりディスプレイへの利用では十分な明るさの輝度が得られることが実証された。また,本研究成果で提案した発光原理に基づいて研究を進めることにより,高効率化も実現できることが期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (27 results)

All 2019 2018 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results) Presentation (21 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results)

  • [Journal Article] Effects of doping by aluminum or lanthanum on the electrical and electroluminescence properties of Ca0.6Sr0.4TiO3:Pr thin films2019

    • Author(s)
      T. Kyomen, K. Aramaki, Y. Kakubari, H. Takashima
    • Journal Title

      Journal of Luminescence

      Volume: 207 Pages: 424-429

    • DOI

      10.1016/j.jlumin.2018.11.037

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Time Dependence of Current Density, Luminance, and Efficiency under dc voltages for the Thin-Film Electroluminescent Device containing Praseodymium and Aluminum co-doped Perovskite Titanate Phosphor2019

    • Author(s)
      T. Kyomen, Y. Maezawa, H. Takashima
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: -

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photoluminescence and Electroluminescence Properties of La2Ti2O7:Pr2018

    • Author(s)
      T. Kyomen, S. Saito, M. Hanaya, H. Takashima
    • Journal Title

      Key Engineering Materials

      Volume: 790 Pages: 60-64

    • DOI

      10.4028/www.scientific.net/kem.790.60

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrical and electroluminescence properties of Ca0.6Sr0.4TiO3:Pr thin film: anomalous current and luminance relaxation2018

    • Author(s)
      Toru Kyomen, Junichi Sato, Makoto Yamada, Kohei Aramaki, Minoru Hanaya, and Hiroshi Takashima
    • Journal Title

      Journal of Luminescence

      Volume: 印刷中 Pages: 175-180

    • DOI

      10.1016/j.jlumin.2018.04.023

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Photoluminescence and electroluminescence properties of La2Ti2O7:Pr2018

    • Author(s)
      Toru Kyomen, Shido Saito, Minoru Hanaya, and Hiroshi Takashima
    • Journal Title

      Key Engineering Materials

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Photoluminescence and electroluminescence properties of (Ca,Sr)TiO3:Er2016

    • Author(s)
      Toru Kyomen, Miyu Seki, Minoru Hanaya, Hiroshi Takashima
    • Journal Title

      Key Engineering Materials

      Volume: 698 Pages: 60-65

    • DOI

      10.4028/www.scientific.net/kem.698.60

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Ca0.6Sr0.4Ti0.9Al0.1O3-d:Pr薄膜における電流と輝度の緩和現象に関する考察2019

    • Author(s)
      京免 徹,高島 浩
    • Organizer
      日本セラミックス協会2019年年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 直流電圧下におけるCa0.6Sr0.4Ti0.9Al0.1O3-d:Pr薄膜の電流密度・輝度・発光効率の時間依存性2019

    • Author(s)
      京免 徹,高島 浩
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Electroluminescence propertis and mechanism of (Ca,Sr)TiO3:Pr thin films2019

    • Author(s)
      T. Kyomen
    • Organizer
      The 8th Workshop on New Frontiers in Ferroelectrics 2019 & The 6th Workshop on Functional and Smart Materials 2019( WFF & WFSM 2019)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Al をドープしたCa0.6Sr0.4TiO3:Pr薄膜のエレクトロルミネッセンスにおける電流と輝度の緩和現象2018

    • Author(s)
      京免 徹,高島 浩
    • Organizer
      日本セラミックス協会第31回秋季シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] Ca0.6Sr0.4TiO3:Pr薄膜のエレクトロルミネッセンスにおけるGa添加効果2018

    • Author(s)
      間庭翔一,京免徹
    • Organizer
      第34回日本セラミックス協会関東支部研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] CaSnO3:Tb薄膜のエレクトロルミネッセンスにおけるAl添加効果2018

    • Author(s)
      舟田達哉,京免徹
    • Organizer
      第34回日本セラミックス協会関東支部研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Ca0.6Sr0.4TiO3:Pr薄膜の電気・EL特性に対する不純物添加効果2018

    • Author(s)
      京免 徹,荒巻 昂平,高島 浩
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Ca0.6Sr0.4TiO3:Pr薄膜のエレクトロルミネッセンスにおける電流・輝度緩和とその熱処理効果2018

    • Author(s)
      京免 徹
    • Organizer
      第54回熱測定討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] (Ca,Sr)TiO3:Pr薄膜のエレクトロルミネッセンス特性と発光メカニズムの提案2018

    • Author(s)
      京免 徹,高島 浩
    • Organizer
      第374回蛍光体同学会講演会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Improvement of electroluminescence performance of Ca0.6Sr0.4TiO3:Pr thin film by Al doping2018

    • Author(s)
      T. Kyomen, K. Aramaki, Y. Kakubari, H. Takashima
    • Organizer
      The 19th International Workshop on Inorganic and Organic Electroluminescence & 2018 International Conference on the Science and Technology of Emissive Displays and Lighting (EL2018),
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Al or La doping effects on the electrical and electroluminescence properties of Ca0.6Sr0.4TiO3:Pr thin films2018

    • Author(s)
      T. Kyomen, K. Aramaki, Y. Kakubari, Y. Maezawa, H. Takashima
    • Organizer
      5th International Symposium of Gunma University Medical Innovation and 9th international Conference on Advanced Micro-Device Engineering (GUMI&AMDE2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Preparation of Transparent Oxide Electroluminescent Device2018

    • Author(s)
      Toru Kyomen and Kohei Aramaki
    • Organizer
      Gunma International Symposium 2018 on Membranes, 2D Matters and Device Applications, Renaissance of Textured Materials
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ca0.6Sr0.4TiO3:Pr薄膜の電気・EL特性に対する Al, La 添加効果2018

    • Author(s)
      京免 徹,荒巻 昂平,高島 浩
    • Organizer
      日本セラミックス協会2018年年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Ca0.6Sr0.4TiO3:Pr薄膜の直流駆動エレクトロルミネ ッセンス2017

    • Author(s)
      山田 真,京免 徹,花屋 実,高島 浩
    • Organizer
      日本セラミックス協会2017年年会
    • Place of Presentation
      日本大学
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] DC-driven electroluminescence of (Ca,Sr)TiO3:Pr thin films2017

    • Author(s)
      Toru Kyomen
    • Organizer
      The 6th Workshop on New Frontiers in Ferroelectrics 2017 & The 4th Workshop on Functional and Smart Materials 2017
    • Place of Presentation
      北海道大学
    • Year and Date
      2017-03-03
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ca0.6Sr0.4TiO3:Pr 薄膜のエレクトロルミネッセンスにおける緩和挙動2017

    • Author(s)
      京免 徹,山田 真,花屋 実,高島 浩
    • Organizer
      第78回応用物理学会秋季学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] SnO2:Sb/Ca0.6Sr0.4TiO3:Pr/In2O3:Sn薄膜におけるエレクトロルミネッセンス特性の熱処理効果2017

    • Author(s)
      京免 徹
    • Organizer
      第53回熱測定討論会
    • Related Report
      2017 Research-status Report
  • [Presentation] Heat treatment effects on electric and electroluminescent properties of (Ca,Sr)TiO3:Pr thin films2017

    • Author(s)
      T. Kyomen and K. Aramaki
    • Organizer
      8th international and 10th Japan-China Joint Symposium on Calorimetry and Thermal Analysis
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ca0.6Sr0.4TiO3:Pr 赤色蛍光体薄膜の直流エレクトロルミネッセンス特性2017

    • Author(s)
      荒巻昂平,京免 徹
    • Organizer
      第 33 回日本セラミックス協会関東支部研究発表会
    • Related Report
      2017 Research-status Report
  • [Presentation] 化学溶液堆積法により作製した(Ca,Sr)TiO3:Pr蛍光体薄膜のEL素子における熱処理効果2016

    • Author(s)
      京免 徹,花屋 実,高島 浩
    • Organizer
      日本セラミックス協会第29回秋季シンポジウム
    • Place of Presentation
      広島大学
    • Year and Date
      2016-09-07
    • Related Report
      2016 Research-status Report
  • [Presentation] AC electric and electroluminescent properties of Pt /Ca0.6Sr0.4TiO3:Pr/In2O3:Sn thin films2016

    • Author(s)
      Toru Kyomen, Makoto Yamada, Minoru Hanaya, Hiroshi Takashima
    • Organizer
      3rd International Symposium of Gunma University Medical Innovation and 8th International Conference on Advanced Micro‐Device Engineering
    • Place of Presentation
      群馬大学
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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