Realization of ZnO Micro-Sphere Laser electrically excited through organic and inorganic hybrid hetero-junction

• Project/Area Number: 26600118
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Optical engineering, Photon science
• Research Institution: Kyushu University
• Principal Investigator: OKADA TATSUO 九州大学, システム情報科学研究科(研究院, 教授 (90127994)
• Co-Investigator(Kenkyū-buntansha): Nakamura Daisuke 九州大学, 大学院システム情報科学研究院, 准教授 (40444864)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 酸化亜鉛 / ZnO / 微小球 / WGM / p-n接合 / 有機-無機ハイブリッド / ヘテロ接合 / マイクロキャビティ / 有機導電体 / 微小共振器 / whispering gallery mode / 微小球結晶 / 有機薄膜

Outline of Final Research Achievements

ZnO micro-spheres were synthesized by laser ablation in air using a Q-switched Nd:YAG laser. The p-n junction was fabricated with 3,4-ethylene- dioxythiophene: poly(styrenexulfonate) (PEDOT/PSS) film as a p-type organic conductor and a n-type ZnO shpere. The electrical and optical characteristics of the fabricated junction was examined. As the results, the rectifying characteristics and the EL emission were successfully observed. In some samples, the WGM mode structure was observed in the EL spectrum.

Research Products

• [Journal Article] Hybrid hetero p-n Junction Between ZnO Microspheres and p-type Materials (2015)
  • Author(s): T. Ikebuchi, N. Tetsuyama, M. Higashihata, H. Ikenoue, D. Nakamura, T. Okada
  • Journal Title: Proc. International Conference on Key Engineering Materials Volume: KEM0010 Pages: 184-188
  • Peer Reviewed
• [Presentation] ZnO マイクロスフィアを用いた無機・有機ハイブリッドp-n接合 (2015)
  • Author(s): 池渕 達也, 東畠 三洋, 中村 大輔, 岡田 龍雄
  • Organizer: 照明学会全国大会
  • Place of Presentation: 福井市
  • Year and Date: 2015-08-28
• [Presentation] Hybrid hetero p-n junction between ZnO microspheres and p-type materials (2015)
  • Author(s): 池渕達也，鉄山紀弘，東畠三洋，池上浩，中村大輔，岡田龍雄
  • Organizer: 2015 5th International Conference on Key Engineering Materials (ICKEM 2015)
  • Place of Presentation: Singapore
  • Year and Date: 2015-03-21
• [Presentation] ZnOマイクロスフィアを用いた無機・有機ハイブリッドpn接合 (2014)
  • Author(s): 池渕達也，東畠三洋，池上浩，中村大輔，岡田龍雄
  • Organizer: 平成26年度(第67回)電気・情報関係学会九州支部連合大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2014-09-19