Studies on the control of the interface between organic layer and electrode using metal oxides and improvement of organic electronic devices

• Project/Area Number: 23550209
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Functional materials/Devices
• Research Institution: University of the Ryukyus
• Principal Investigator: KAGEYAMA Hiorshi 琉球大学, 工学部, 准教授 (50294038)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2011: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
• Keywords: 界面制御 / 金属酸化物 / 有機デバイス / 有機薄膜太陽電池 / 有機発光ダイオード / 有機エレクトロニクスデバイス / 有機エレクトロルミネッセンス素子

Research Abstract

It was found that exciton quenching takes place at the interface between organic layer and LiF / Al cathode and that the exciton quenching is suppressed by the insertion of molybdenum oxide (MoO3) layer between LiF and Al. The use of MoO3 as a cathode buffer material in organic solar cells improves the short circuit current densities, thus resulting in the improvement of the power conversion efficiencies. Organic light-emitting diodes (OLEDs) with LiF / MoO3 / Al cathode showed higher external quantum efficiencies as compared with the OLEDs with LiF / Al cathode.

Research Products

• [Journal Article] Performance of blue fluorescence and red phosphorescent organic light-emitting diodes using a molecular material with high hole drift mobility (2012)
  • Author(s): T. Oshiro, T. Tamura, H. Kageyama, Y. Shirota, H. Kajii, and Y. Ohmori
  • Journal Title: Phys. Status Solidi C Volume: 9 Pages: 2549-2549
  • Peer Reviewed
• [Journal Article] Mechanochromic luminescence of 4-[bis(4- methylphenyl)amino]benzaldehyde (2011)
  • Author(s): K. Mizuguchi, H. Kageyama, and H. Nakano
  • Journal Title: Mater. Lett. Volume: 65 Pages: 2658-2658
  • Peer Reviewed
• [Journal Article] Performance of Organic Light-Emitting Diodes Using an Emissive Material with High Hole Drift Mobility (2011)
  • Author(s): T. Tamura, H. Kageyama, Y. Shirota, H. Kajii, and Y. Ohmori
  • Journal Title: Mol. Cryst. Liq. Cryst. Volume: 538 Pages: 98-98
  • Peer Reviewed
• [Journal Article] Performance of Organic Light-Emitting Diodes Using an Emissive Material with High Hole Drift Mobility (2011)
  • Author(s): Takeshi Tamura, Hiroshi Kageyama, Yasuhiko Shirota, Hirotake Kajii, Yutaka Ohmori
  • Journal Title: Molecular Crystals and Liquid Crystals Volume: 538 Issue: 1 Pages: 98-102
  • DOI: 10.1080/15421406.2011.563661
  • Peer Reviewed
• [Journal Article] Mechanochromic luminescence of 4-[bis(4-methylphenyl)amino]benzaldehyde (2011)
  • Author(s): Kei Mizuguchi, Hiroshi Kageyama, Hideyuki Nakano
  • Journal Title: Materials Letters Volume: 65 Issue: 17-18 Pages: 2658-2661
  • DOI: 10.1016/j.matlet.2011.05.068
  • Peer Reviewed
• [Presentation] Development of Organic Solar Cells Using Amorphous Molecular Materials with High Charge Carrier Mobilities (2013)
  • Author(s): H. Kageyama, Y. Ohmori, and Y. Shirota
  • Organizer: International Symposium on Organic Optical and Electronic Materials and Devices
  • Place of Presentation: Osaka University, Suita, Osaka, Japan
  • Year and Date: 2013-03-08
  • Invited
• [Presentation] 高移動度を有する正孔輸送性アモルファス分子材料を用いる有機薄膜太陽電池の開発 (2013)
  • Author(s): 景山弘、大森裕、城田靖彦
  • Organizer: 高分子学会印刷・情報記録・表示研究会講座
  • Place of Presentation: 産総研臨海副都心センター別館、東京
  • Invited
• [Presentation] 高移動度を有する正孔輸送性アモルファス分子材料の創製と有機薄膜太陽電池への応用 (2012)
  • Author(s): 景山弘、大森裕、城田靖彦
  • Organizer: 第50回OPERA研究交流セミナー
  • Place of Presentation: 九州大学最先端有機光エレクトロニクス研究センター
  • Year and Date: 2012-05-02
  • Invited
• [Presentation] Development of Organic Solar Cells Using Amorphous Molecular Materials with High Charge Carrier Mobilities (2012)
  • Author(s): H. Kageyama, Y. Ohmori, and Y. Shirota
  • Organizer: The 12th International Symposium on Advanced Organic Photonics (ISAOP-12)
  • Place of Presentation: Okinawa Industrial Support Center, Naha, Japan
  • Invited
• [Presentation] 高移動度を有する正孔輸送性アモルファス分子材料を用いる高性能バルクヘテロ接合型有機太陽電池の開発 (2012)
  • Author(s): 景山 弘，大森 裕，城田 靖彦
  • Organizer: 2012年（平成24年）春季 第59回 応用物理学関係連合講演会
  • Place of Presentation: 早稲田大学，新宿区，東京都
• [Presentation] Development of Amorphous Molecular Materials with High Hole Drift Mobility and Their Application to Organic Solar Cells (2011)
  • Author(s): H. Kageyama and Y. Shirota
  • Organizer: International Symposium on Materials Science and Innovation for Sustainable Society, Eco- materials and ECO-innovation for Global Sustainability (ECO-MATES 2011)
  • Place of Presentation: Hotel Hankyu Expo Park, Osaka, Japan
  • Invited
• [Presentation] Development of Amorphous Molecular Materials with High Hole Drift Mobility and Their Application to Organic Solar Cells (2011)
  • Author(s): H. Kageyama and Y. Shirota
  • Organizer: International Symposium on Materials Science and Innovation for Sustainable Society, Eco-materials and ECO-innovation for Global Sustainability (ECO-MATES 2011)(招待講演)
  • Place of Presentation: Hotel Hankyu Expo Park, Osaka, Japan
• [Presentation] 高移動度正孔輸送材料を用いた青色蛍光および赤色燐光有機EL素子特性 (2011)
  • Author(s): 大城朝是、田村武史、景山 弘、城田靖彦、梶井博武、大森 裕
  • Organizer: 有機EL討論会第13回例会
  • Place of Presentation: 大阪大学，吹田市，大阪府
• [Presentation] 赤色燐光材料ドープによる高移動度正孔輸送材料を用いた有機EL素子特性への影響 (2011)
  • Author(s): 大城朝是、田村武史、景山 弘、城田靖彦、梶井博武、大森 裕
  • Organizer: 2011年（平成23年）秋季 第72回応用物理学会学術講演会
  • Place of Presentation: 山形大学、山形
• [Presentation] 高移動度有機材料tris[4-(5-phenylthiophen-2-yl)phenyl]amineを用いた有機受光素子の特性改善に関する検討
  • Author(s): 辻生翔一、梶井博武、景山 弘、城田靖彦、大森 裕
  • Organizer: 第61回応用物理学会春季学術講演会
  • Place of Presentation: 青山学院大学、相模原、神奈川県
• [Presentation] 高移動度を有する正孔輸送性アモルファス分子材料を用いる有機薄膜太陽電池の作製と評価
  • Author(s): 景山 弘、大森 裕、城田靖彦
  • Organizer: 電子情報通信学会 有機エレクトロニクス研究会 (OME) 研究会
  • Place of Presentation: 沖縄県青年会館、沖縄県那覇市
• [Presentation] 高移動度を有する正孔輸送性アモルファス分子材料の創製と有機薄膜太陽電池への応用
  • Author(s): 景山 弘、大森 裕、城田靖彦
  • Organizer: 第50回OPERA研究交流セミナー
  • Place of Presentation: 九州大学 最先端有機光エレクトロニクス研究センター、福岡県福岡市
  • Invited
• [Presentation] Development of Organic Solar Cells Using Amorphous Molecular Materials with High Charge Carrier Mobilities
  • Author(s): H. Kageyama, Y. Ohmori, and Y. Shirota
  • Organizer: The 12th International Symposium on Advanced Organic Photonics (ISAOP-12)
  • Place of Presentation: 沖縄産業支援センター、沖縄県那覇市
  • Invited
• [Presentation] 陰極バッファー材料としてMoO3を用いる有機薄膜太陽電池の作製と評価
  • Author(s): 宮城英介、景山 弘、大森 裕、城田 靖彦
  • Organizer: 電子情報通信学会 有機エレクトロニクス (OME) 研究会
  • Place of Presentation: 沖縄県青年会館、沖縄県那覇市
• [Presentation] 高移動度を有する正孔輸送性アモルファス分子材料を用いる有機薄膜太陽電池の開発
  • Author(s): 景山 弘、大森 裕、城田靖彦
  • Organizer: 高分子学会 印刷・情報記録・表示研究会講座
  • Place of Presentation: 産総研臨海副都心センター別館、東京都
  • Invited
• [Presentation] Development of Organic Solar Cells Using Amorphous Molecular Materials with High Charge Carrier Mobilities
  • Author(s): H. Kageyama, Y. Ohmori, and Y. Shirota
  • Organizer: International Symposium on Organic Optical and Electronic Materials and Devices
  • Place of Presentation: 大阪大学吹田キャンパス、大阪府吹田市
  • Invited
• [Presentation] pn-ヘテロ接合型光電変換素子の性能に及ぼす膜厚とp-型ドーピングの効果：2-TNATA - C60系
  • Author(s): 末廣 拓、野村泰弘、加藤 航、北川翔一、梅田孝男、成田憲彦、松岡武彦、景山 弘、城田靖彦
  • Organizer: 日本化学会第93春季年会
  • Place of Presentation: 立命館大学びわこ・くさつキャンパス、滋賀県草津市
• [Presentation] 陰極バッファーとしてMoO3を用いる有機薄膜太陽電池の開発
  • Author(s): 景山 弘、大森 裕、城田靖彦
  • Organizer: 第60回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川工科大学、神奈川県厚木市
• [Book] Small Molecular Weight Materials for (Opto)Electronic Applications : Overview, "Handbook of Organic Materials for Optical and (Opto)Electronic Devices. Properties and Applications (Ed. O. Ostroverkhova)", Part I, Chapter 1 (2013)
  • Author(s): Y. Shirota and H. Kageyama
  • Publisher: Woodhead Publishing
• [Book] Charge- transporting Polymers, "Encyclopedia of Polymeric Nanomaterials (Eds. S. Kobayashi, K. Müllen)", Chapter 1-1
  • Author(s): Y. Shirota and H. Kageyama
  • Publisher: Springer(in press)