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Enhanced photostability of surface potential generated by spontaneous orientation polarization

Research Project

Project/Area Number 21K05208
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 35030:Organic functional materials-related
Research InstitutionGunma University (2022-2023)
Chiba University (2021)

Principal Investigator

Tanaka Yuya  群馬大学, 大学院理工学府, 准教授 (90780065)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsエレクトレット / 自発配向分極 / 極性分子 / 脱分極 / 巨大表面電位 / 有機発光ダイオード / 振動発電 / エネルギーハーベスティング / 有機半導体 / 配向分極 / 有機EL / センサ / 表面電位 / 有機エレクトロニクス / 極性有機分子
Outline of Research at the Start

エレクトレットはセンサやマイク,発電素子など様々なデバイスの根幹を成す材料であるが,その作製には絶縁体への荷電処理が必須であった.近年我々は「自発的に配向する極性有機分子は,荷電処理が一切不要なエレクトレットとして機能する」ことを実証した.これは上記デバイスの低コスト化につながる新しいエレクトレットであるが,光に対する表面電位の安定性は低く,従来の評価手法の時間分解能が秒オーダーと低いことも相まって,その電位消失機構は完全には理解されていない.そこで本研究では時間分解能を高めた補償電荷測定法を構築する.本手法を用いて表面電位の安定性の制限因子を明らかにするとともに,長寿命化を実現する.

Outline of Final Research Achievements

An electret is an insulator that permanently retains electric charge or polarization and is used in various devices such as vibration energy harvesters and sensors. However, its fabrication requires a charging process. To address this issue, we are advancing the application of polar organic molecules that spontaneously orient as electrets. Nonetheless, thin films made of polar organic molecules depolarize upon light exposure. Therefore, in this study, we prepared samples with an insulating layer inserted between the thin film and the underlying electrode and investigated the depolarization process. As a result, we successfully achieved samples with high photostability.

Academic Significance and Societal Importance of the Research Achievements

エレクトレットとは半永久的に電荷,もしくは電気分極を有する絶縁体であり,振動発電素子やセンサをはじめ様々なデバイスに利用されているが,その作製には荷電処理が必要であった.この課題を解決するために,我々は自発的に配向する極性有機分子のエレクトレット応用を進めている.結果として荷電処理を必要としない振動発電素子が実現できているが,その光に対する安定性は高くはなった.本研究を通じて光安定性の高いサンプルを開発できるようになったので,振動発電素子の実用化が進むとともに,他のデバイスへの応用も広がると期待できる.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (45 results)

All 2024 2023 2022 2021 Other

All Journal Article (5 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (37 results) (of which Int'l Joint Research: 17 results,  Invited: 16 results) Remarks (3 results)

  • [Journal Article] Observation of Surface Potential of Micropatterned Self-assembled Electrets for MEMS Vibrational Energy Harvesters2023

    • Author(s)
      Yamane Daisuke、Kawashima Kosuke、Sugimoto Reiki、Li Ruichen、Kayaguchi Hideyuki、Kurihara Keisuke、Ishii Hisao、Tanaka Yuya
    • Journal Title

      Sensors and Materials

      Volume: 35 Issue: 6 Pages: 1985

    • DOI

      10.18494/SAM4400

    • ISSN
      0914-4935, 2435-0869
    • Year and Date
      2023-06-27
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Current Generation Mechanism in Self-assembled Electret-based Vibrational Energy Generators2022

    • Author(s)
      Tanaka Yuya、Matsuura Noritaka、Ishii Hisao
    • Journal Title

      Sensors and Materials

      Volume: 34 Issue: 5 Pages: 1859

    • DOI

      10.18494/SAM3860

    • ISSN
      0914-4935, 2435-0869
    • Year and Date
      2022-05-24
    • Related Report
      2022 Research-status Report 2021 Research-status Report
  • [Journal Article] 28‐3: <i>Invited Paper:</i> Enhanced Current Efficiency and Accumulation Charge in Model OLEDs by Light Irradiation During Deposition of Polar Molecule2022

    • Author(s)
      Tanaka Yuya、Tazo Yuki、Ishii Hisao
    • Journal Title

      SID Symposium Digest of Technical Papers

      Volume: 53 Issue: 1 Pages: 330-333

    • DOI

      10.1002/sdtp.15487

    • Related Report
      2022 Research-status Report
  • [Journal Article] Understanding spontaneous orientation polarization of amorphous organic semiconducting films and its application to devices2022

    • Author(s)
      Noguchi Yutaka、Tanaka Yuya、Ishii Hisao、Br?tting Wolfgang
    • Journal Title

      Synthetic Metals

      Volume: 288 Pages: 117101-117101

    • DOI

      10.1016/j.synthmet.2022.117101

    • Related Report
      2022 Research-status Report
  • [Journal Article] MEMS post-processed self-assembled electret for vibratory energy harvesters2021

    • Author(s)
      Yamane Daisuke、Kayaguchi Hideyuki、Kawashima Kosuke、Ishii Hisao、Tanaka Yuya
    • Journal Title

      Applied Physics Letters

      Volume: 119 Issue: 25 Pages: 254102-254102

    • DOI

      10.1063/5.0072596

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 自己組織化エレクトレットを用いた振動発電モデル素子の長寿命化2024

    • Author(s)
      田中有弥
    • Organizer
      第71回応用物理学会春季学術講演会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 極性分子の自発的配向分極現象を利用したエレクトレット型振動発電素子2023

    • Author(s)
      田中有弥
    • Organizer
      23-1有機エレクトロニクス研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Circuit simulator implementation of an equivalent circuit model of self-assembled electret vibrational energy harvesters based on an energy diagram2023

    • Author(s)
      Kyosuke Tokuno, Shohei Kinoshita, Hideyuki Kayaguchi, Keisuke Kurihara, Hisao Ishii, Yuya Tanaka, Daisuke Yamane
    • Organizer
      The 22st International Conference on Solid-State Sensors, Actuators and Microsystems
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Self-assembled electret for vibrational energy harvester2023

    • Author(s)
      Yuya Tanaka
    • Organizer
      19th Annual International Symposium on Electrets
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] SAE-MEMS technology for electrostatic vibrational energy harvesters2023

    • Author(s)
      Daisuke Yamane, Yuya Tanaka
    • Organizer
      244th ECS Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 自己組織化エレクトレット型振動発電素子の動作機構解析:表面電位と発生電流の関係2023

    • Author(s)
      田中有弥, 栗原啓輔, 阿部直矢, 石井久夫
    • Organizer
      第40回「センサ・マイクロマシンと応用システム」シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] A simulation platform for SAE-MEMS vibration energy harvesters using hardware description language on a circuit simulator2023

    • Author(s)
      Kyosuke Tokuno, Shohei Kinoshita, Fumihisa Sugitani, Toshiki Sono, Yuya Tanaka, Daisuke Yamane
    • Organizer
      36th International Microprocesses and Nanotechnology Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光照射下でのAlq3の巨大表面電位の安定性評価2023

    • Author(s)
      神宮彩人, 山根大輔, 鈴木孝明, 田中有弥
    • Organizer
      電気学会電子材料研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] An equivalent circuit model of self-assembled electret mems vibration energy harvesters based on an energy diagram in hardware description language2023

    • Author(s)
      Kyosuke Tokuno, Shohei Kinoshita, Fumihisa Sugitani, Toshiki Sono, Yuya Tanaka, Daisuke Yamane
    • Organizer
      The 22st International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 極性有機半導体を利用した振動発電素子の研究開発2023

    • Author(s)
      田中有弥
    • Organizer
      電子デバイス実装研究委員会および有機/無機接合研究委員会合同オンライン研究委員会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 極性有機分子をエレクトレットとして使用した振動発電素子:分子配向制御によるデバイスの高出力化2023

    • Author(s)
      田中有弥
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Smart electret composed of polar organic molecules for vibrational energy harvesters2022

    • Author(s)
      Yuya Tanaka
    • Organizer
      The 17th IEEE International Conference on Nano/Micro Engineered & Molecular Systems
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Enhanced current efficiency and accumulation charge in model OLEDs by light irradiation during deposition of polar molecule2022

    • Author(s)
      Yuya Tanaka, Yuki Tazo, Hisao Ishii
    • Organizer
      SID’s Display Week 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 光照射成膜によるOLEDモデル素子の電流効率の向上と蓄積電荷の増加2022

    • Author(s)
      田中有弥
    • Organizer
      情報ディスプレイ研究会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Spontaneous orientation of polar OLED materials: Its role and applications2022

    • Author(s)
      Yuya Tanaka, Yuki Tazo, Shin Shinohara, Hideyuki Kayaguchi, Naoya Abe, Keisuke Kurihara, Masahiro Ohara, Hisao Ishii
    • Organizer
      SPIE Optics + Photonics
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 絶縁体挿入による自己組織化エレクトレット型振動発電素子の光照射に対する安定性の向上2022

    • Author(s)
      栗原啓輔,栢口英之,松浦寛恭,石井久夫,田中有弥
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] 微小正弦波重畳型変位電流評価法によるAlq3MIS型素子の電子注入・輸送過程の評価2022

    • Author(s)
      阿部直矢,篠原真,石井久夫,田中有弥
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Self-assembled electret utilizing spontaneous orientation polarization for vibrational energy generator2022

    • Author(s)
      Yuya Tanaka
    • Organizer
      Virtual symposium on Static-Tribo-Electricity of Powder
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Impact of deposition rate of alq3 on charge behaviors and device properties in organic light-emitting diodes2022

    • Author(s)
      Shin Shinohara, Naoya Abe, Hisao Ishii, Yuya Tanaka
    • Organizer
      13th International Conference on Nano-Molecular Electronics
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of light irradiation on giant surface potential of polar organic molecules on insulator layer2022

    • Author(s)
      Keisuke Kurihara, Hideyuki Kayaguchi, Masaya Kitaoka, Hisao Ishii, Yuya Tanaka
    • Organizer
      13th International Conference on Nano-Molecular Electronics
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of a crucible heating on the surface potential of 1,3,5-tris(1-phenyl-1H-benzimidazol-2-yl)benzene2022

    • Author(s)
      Hideyuki Kayaguchi, Keisuke Kurihara, Hisao Ishii, Yuya Tanaka
    • Organizer
      13th International Conference on Nano-Molecular Electronics
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Relationship between output current and surface potential in self-assembled electret-based vibrational energy harvester2022

    • Author(s)
      Yuya Tanaka, Hideyuki Kayaguchi, Keisuke Kurihara, Hisao Ishii
    • Organizer
      The 21st International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Direct measurement of the surface potential of micropatterned self-assembled electrets for mems vibrational energy harvesters2022

    • Author(s)
      Kosuke Kawashima, Reiki Sugimoto, Ruichen Li, Hideyuki Kayaguchi, Keisuke Kurihara, Hisao Ishii, Yuya Tanaka, Daisuke Yamane
    • Organizer
      The 21st International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 回転型Kelvin Probeによる有機太陽電池構造のバンドベンディングと表面光起電力のリアルタイム測定2022

    • Author(s)
      大原 正裕, 田中 有弥, 石井 久夫
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 自己組織化エレクトレットを用いたMEMS振動発電素子の検討2022

    • Author(s)
      杉本 澪貴, 川島 康介, 栢口 英之, 石井 久夫, 田中 有弥, 山根 大輔
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 変位電流評価法による電池用材料の電気特性評価2022

    • Author(s)
      山本 星斗, 江草 俊, 石井 久夫, 田中 有弥
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Enhanced stability of electret-based vibrational energy generators utilizing spontaneous orientation polarization of OLED materials2021

    • Author(s)
      Yuya Tanaka, Noritaka Matsuura, Hideyuki Kayaguchi, Yuki Tazo, Hisao Ishii
    • Organizer
      The 6th International TADF Workshop
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 荷電処理が一切不要なエレクトレット型振動発電素子:有機半導体材用の新しい応用展開2021

    • Author(s)
      田中有弥
    • Organizer
      10th ECSYU Symposium -有機フロンティア材料チュートリアルセミナー-
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 自発配向する極性有機分子を利用したエレクトレット型振動発電素子の開発2021

    • Author(s)
      田中有弥,松浦寛恭,石井久夫
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 極性有機分子を利用したエレクトレット型振動発電素子の開発2021

    • Author(s)
      田中有弥,松浦 寛恭,田雑 友貴,栢口 英之,石井 久夫
    • Organizer
      日本機械学会2021年度年次大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Enhanced stability against light irradiation in electret-based vibrational energy generators composed of OLED materials"2021

    • Author(s)
      Yuya Tanaka, Noritaka Matsuura, Yuki Tazo, Hieyuki Kayaguchi, Hisao Ishii
    • Organizer
      13th Asian Conference on Organic Electronics 2021 (A-COE)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Electret-based vibrational energy generator composed of polar molecules for OLED2021

    • Author(s)
      Yuya Tanaka, Noritaka Matsuura, Yuki Tazo, Hideyuki Kayaguchi, Hisao Ishii
    • Organizer
      International Workshop on Active-Matrix Flatpanel Displays and Devices
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Accumulation, Depletion, Inversion Processes in Metal/Insulator/p-Si Device Evaluated by Displacement Current Measurement2021

    • Author(s)
      Hoshito Yamanoto, Yuya Tanaka, Tatsuhiro Kambayashi, Takeaki Yajima, Hisao Ishii
    • Organizer
      Material Rsearch Meeting 2021 (MRM 2021)
    • Related Report
      2021 Research-status Report
  • [Presentation] 変位電流評価法による全固体電池モデル素子の電気物性評価2021

    • Author(s)
      山本 星斗、江草 俊、石井 久夫、田中 有弥
    • Organizer
      第62回電池討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] Real-time Surface Potential Measurement during Evaporation of Alq3 Film Studied by Rotary Kelvin Probe2021

    • Author(s)
      Masahiro Ohara,Yuya Tanaka, Hisao Ishii
    • Organizer
      The 9th International Symposium on Surface Science (ISSS-9)
    • Related Report
      2021 Research-status Report
  • [Presentation] 回転型 Kelvin Probe装置による極性有機蒸着膜のリアルタイム表面電位測定2021

    • Author(s)
      大原 正裕,田中 有弥, 石井 久夫
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Evaluation of Giant Surface Potential during Evaporation of Alq3 Film studied by Rotary Kelvin Probe2021

    • Author(s)
      Masahiro Ohara,Yuya Tanaka, Hisao Ishii
    • Organizer
      KJF-ICOMEP2021
    • Related Report
      2021 Research-status Report
  • [Remarks] 研究室のWEBページ

    • URL

      https://sites.google.com/gunma-u.ac.jp/yuya-tanaka/

    • Related Report
      2023 Annual Research Report
  • [Remarks] 研究室のWEBページ

    • URL

      https://sites.google.com/gunma-u.ac.jp/yuya-tanaka

    • Related Report
      2022 Research-status Report
  • [Remarks] 研究室のWEBページ

    • URL

      http://ishii-lab.in.coocan.jp/pukiwiki/?FrontPage

    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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