有機薄膜太陽電池の表面プラズモン共鳴による高効率化に関する研究

• Project Area: Strong Photons-Molecules Coupling Fields for Chemical Reactions
• Project/Area Number: 21020020
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Osaka University
• Principal Investigator: 尾崎 雅則 大阪大学, 大学院・工学研究科, 教授 (50204186)
• Co-Investigator(Kenkyū-buntansha): 藤井 彰彦 大阪大学, 大学院・工学研究科, 准教授 (80304020) ; 吉田 浩之 大阪大学, 大学院・工学研究科, 助教 (80550045)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥3,800,000 (Direct Cost: ¥3,800,000); Fiscal Year 2010: ¥1,900,000 (Direct Cost: ¥1,900,000); Fiscal Year 2009: ¥1,900,000 (Direct Cost: ¥1,900,000)
• Keywords: プラズモン / 有機薄膜太陽電池 / 導電性高分子 / フタロシアニン / 表面プラズモン / 局在プラズモン / 時間領域差分法 / フラーレン

Research Abstract

有機薄膜太陽電池は、励起子拡散長が短いためドナー-アクセプター界面で生成された励起子のみが解離して光電流に寄与し、キャリア生成サイトが少ないことが、高効率化において最大の問題の一つである。本研究では、表面プラズモンを利用した有機薄膜太陽電池の高効率化について検討を行った。まず、ドナーとアクセプターが素子全体にわたって入り組んだ相分離構造を形成するバルクヘテロ型、および、ドナーとアクセプターとの積層界面で両者の入り組んだ状態を自己組織的に形成する相互浸透積層構造型を採用し、金属ナノ微粒子の導入効果を検討した。その結果、外部量子効率EQEが80%近い光吸収波長範囲内での大きなプラズモン効果は期待できず、吸収範囲の拡大あるいは吸収の少ない波長領域でのプラズモン利用の検討の必要性を示した。次に、ドナー材料として導電性高分子およびフタロシアニン、アクセプター材料としてC_<60>またはフラーレン誘導体PCBMを用いて、積層構造を金属薄膜で挟んだMIM構造を作製し、光電流スペクトルの測定よりプラズモンがキャリア生成機構に及ぼす効果、特に長距離伝搬プラズモンが励起子生成機構に及ぼす効果を調べた。その過程で、側鎖を導入した液晶性フタロシアニンをドナー材料として用いた場合、低分子でありながら溶媒塗布によりバルクヘテロ構造の形成が可能であり、0.8Vを超える高い開放電圧が得られ、3.2%のエネルギー変換効率が得られた。また、導電性高分子/PCBM複合系に液晶性フタロシアニンを添加することにより、導電性高分子吸収帯域におけるEQEを損なうことなく、赤外域でのキャリア生成が増大し、短絡電流の増大・効率の改善に寄与することを明らかにした。

Research Products

• [Journal Article] High Carrier Mobility up to 1.4 cm^2・V^<-1>・s^<-1> in Non-Peripheral Octahexyl Phthalocyanine (2011)
  • Author(s): Yasuo Miyake, M.Ozaki
  • Journal Title: Appl.Phys.Express Volume: 4
  • NAID: 10027783000
  • Peer Reviewed
• [Journal Article] 有機薄膜太陽電池の研究開発動向と展望 (2011)
  • Author(s): 尾崎雅則、藤井彰彦
  • Journal Title: 化学工業 Volume: 62 Pages: 62-69
• [Journal Article] Solution Processable Organic Solar Cell Based on Bulk Heterojunction Utilizing Phthalocyanine Derivative (2010)
  • Author(s): Tetsuro Hori, Masanori Ozaki
  • Journal Title: Appl.Phys.Express Volume: 3
  • NAID: 10027441034
  • Peer Reviewed
• [Journal Article] Dispersion of nanoparticles in liquid crystals by sputtering and its effect on the electrooptic properties (2010)
  • Author(s): Hiroyuki Yoshida
  • Journal Title: IEICE Transactions on Electronics Volume: Vol.E93-C Pages: 1595-1601
  • NAID: 10027983785
  • Peer Reviewed
• [Journal Article] Solvent Vapor Treatment Effects of Poly(3-hexylthiophene) Thin Film and its Application for Interpenetrating Heterojunction Organic Solar Cells (2010)
  • Author(s): Tetsuro Hori, M.Ozaki
  • Journal Title: Materials Volume: 3 Pages: 4939-4949
  • NAID: 120006840978
  • Peer Reviewed
• [Journal Article] Fabrication of ZnO Nanopillars and Their Application to Organic Photovoltaic Cells Based on Conducting Polymer and Fullerene (2010)
  • Author(s): Hiroki Moritou, M.Ozaki
  • Journal Title: Jpn.J.Appl.Phys. Volume: 49
  • NAID: 210000069495
  • Peer Reviewed
• [Journal Article] Photovoltaic Properties in Interpenetrating Heterojunction Organic Solar Cells Utilizing MoO3 and ZnO Charge Transport Buffer Layers (2010)
  • Author(s): Tetsuro Hori, M.Ozaki
  • Journal Title: Materials Volume: 3 Pages: 4915-4921
  • NAID: 120006840977
  • Peer Reviewed
• [Journal Article] Surface Plasmon Enhanced Photoluminescence on Biharmonic Grating Structure (2010)
  • Author(s): Yasumasa Fujiwara, M.Ozaki
  • Journal Title: J.Nonlinear Optical Phys.& Mater Volume: 19 Pages: 571-581
  • Peer Reviewed
• [Journal Article] 有機薄膜太陽電池とプラズモニクス (2010)
  • Author(s): 尾崎雅則、藤井彰彦
  • Journal Title: オプトロニクス Volume: 29 Pages: 95-98
• [Journal Article] 有機薄膜太陽電池の最近の進展 (2010)
  • Author(s): 藤井彰彦、尾崎雅則
  • Journal Title: 応用物理 Volume: 79 Pages: 413-416
  • NAID: 10026199979
• [Journal Article] スパッタ法によるナノ粒子分散液晶の作製 (2010)
  • Author(s): 吉田浩之、尾崎雅則
  • Journal Title: 日本液晶学会誌 Volume: 第14号4巻 Pages: 233-240
  • NAID: 10027650199
• [Journal Article] Efficient organic photovoltaic tandem cells with novel transparent conductive oxide interlayer and poly(3-hexylthiophene) : Fullerene active layers (2010)
  • Author(s): Jun Sakai
  • Journal Title: Solar Energy Materials & Solar Cells 94 Pages: 376-380
  • Peer Reviewed
• [Journal Article] Fabrication of organic photovoltaic cells with double-layer ZnO structure (2009)
  • Author(s): Xiaohui Ju
  • Journal Title: Solar Energy Materials & Solar Cells 93 Pages: 1562-1567
  • Peer Reviewed
• [Journal Article] MoO_3 Buffer Layer Effect on Photovoltaic Properties of Interpenetrating Heterojunction Type Organic Solar Cells (2009)
  • Author(s): Tetsuro Hori
  • Journal Title: Thin Solid Films 518 Pages: 522-525
  • Peer Reviewed
• [Journal Article] Effect of Solvent Vapor Treatment on Photovoltaic Properties of Conducting Polymer/C_<60> Interpenetrating Heterojunction Structured Organic Solar Cell (2009)
  • Author(s): Varutt Kittichungchit
  • Journal Title: Thin Solid Films 518 Pages: 518-521
  • Peer Reviewed
• [Journal Article] Study on the bulk junction type organic solar cells with double zinc oxide layer (2009)
  • Author(s): Xiaohui Ju
  • Journal Title: Thin Solid Films 518 Pages: 786-790
  • Peer Reviewed
• [Journal Article] Nanoparticle-dispersed liquid crystals fabricated by sputter doping (2009)
  • Author(s): Hiroyuki Yoshida
  • Journal Title: Advanced Materials 22 Pages: 622-626
  • Peer Reviewed
• [Journal Article] Rapid Energy Transfer and Improved Performance of Organic Light-Emitting Diodes Using Composite Film Based on π-Conjugated Polymers (2009)
  • Author(s): Naoyuki Yamasaki
  • Journal Title: Japanese Journal of Applied Physics 48
  • Peer Reviewed
• [Presentation] Liquid Crystalline Phthalocyanines as a Self-assembling Organic Semicon ductor for Solution-Processing Thin Film Devices (2011)
  • Author(s): Yasuo Miyake
  • Organizer: SPIE Photonics West, OPTO 2011
  • Place of Presentation: San Francisco, USA(招待講演)
  • Year and Date: 2011-01-25
• [Presentation] Discotic Mesogenic Molecule with High Carrier Mobility in Excess of 1cm^2/Vs and Solution-Processable Bulk-Heterojunction Solar Cell (2010)
  • Author(s): Masanori Ozaki
  • Organizer: 9th International Conference on Nano-MolecularElectronics (ICNME2010)
  • Place of Presentation: Portopia Hotel, Kobe
  • Year and Date: 2010-12-14
• [Presentation] Columnar Liquid Crystals with High Carrier Mobility and Their Application to Printable Electronics (2010)
  • Author(s): Masanori Ozaki
  • Organizer: 2010 MRS Fall Meeting, Symposium L : Liquid-Crystal Materials-Beyond Displays
  • Place of Presentation: Boston, USA(招待講演)
  • Year and Date: 2010-11-29
• [Presentation] イオン液体中における金ナノ粒子の表面プラズモン吸収 (2010)
  • Author(s): 井上健太
  • Organizer: 平成22年電気関係学会関西支部連合大会
  • Place of Presentation: 立命館大学、滋賀県草津市
  • Year and Date: 2010-11-14
• [Presentation] 可溶性フタロシアニン誘導体を用いたバルクヘテロ型有機薄膜太陽電池のPCBM比率依存性 (2010)
  • Author(s): 堀哲郎
  • Organizer: 平成22年電気関係学会関西支部連合大会
  • Place of Presentation: 立命館大学、滋賀県草津市
  • Year and Date: 2010-11-13
• [Presentation] 高キャリア移動度を有する1,4,8,11,15,18,22,25-オクタヘキシルフタロシアニン (2010)
  • Author(s): 三宅康雄
  • Organizer: 2010年秋季第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学、長崎市
  • Year and Date: 2010-09-16
• [Presentation] 可溶性フタロシアニン誘導体を用いた塗布型バルクヘテロ接合有機薄膜太陽電池 (2010)
  • Author(s): 堀哲郎
  • Organizer: 2010年秋季第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学、福岡市
  • Year and Date: 2010-09-15
• [Presentation] 垂直配向液晶を用いた金属周期構造の表面プラズモン共鳴の電界制御 (2010)
  • Author(s): 小川康宏
  • Organizer: 2010年秋季第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学、長崎市
  • Year and Date: 2010-09-14
• [Presentation] スパッタドープ法により作製した金ナノ粒子分散溶液における屈折率変調効果に関する検討 (2010)
  • Author(s): 熊谷孝幸
  • Organizer: 2010年秋季第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学、長崎市
  • Year and Date: 2010-09-14
• [Presentation] 高キャリア移動度を示す1,4,8,11,15,18,22,25-オクタアルキルフタロシアニン同族列のキャリア輸送特性 (2010)
  • Author(s): 三宅康雄
  • Organizer: 2010年日本液晶学会講演会・討論会
  • Place of Presentation: 九州大学、福岡市
  • Year and Date: 2010-09-08
• [Presentation] Electric Field Tuning of Surface Plasmon Resonance using Vertical Alignment Liquid Crystals on a Silver Grating Structure (2010)
  • Author(s): Yasuhiro Ogawa
  • Organizer: 23th International Liquid Crystal Conference, ILCC 2010
  • Place of Presentation: Jagiellonian University Conference Centre, Krakow, Poland
  • Year and Date: 2010-07-15
• [Presentation] Unexpectedly High Carrier Mobility in the Homologues of 1,4,8,11,15,18,22,25-Octaalkylphthalocyanine (2010)
  • Author(s): Yasuo Miyake
  • Organizer: 23th International Liquid Crystal Conference, ILCC 2010
  • Place of Presentation: Jagiellonian University Conference Centre, Krakow, Poland
  • Year and Date: 2010-07-12
• [Presentation] High Carrier Mobility in Columnar and Crystalline Phases of Discotic Mesogenic Molecules (2010)
  • Author(s): Masanori Ozaki
  • Organizer: International Conference on Science and Technology of Synthetic Metals 2010 (ICSM2010)
  • Place of Presentation: Kyoto International Conference Center, Kyoto(招待講演)
  • Year and Date: 2010-07-09
• [Presentation] Fabrication of Organic Photovoltaic Cells by Lamination Method (2010)
  • Author(s): Hiroki Moritou
  • Organizer: International Conference on Science and Technology of Synthetic Metals 2010 (ICSM2010)
  • Place of Presentation: Kyoto International Conference Center, Kyoto
  • Year and Date: 2010-07-06
• [Presentation] Photocurrent Enhancement by Localized Electric Field on Metal-Insulator-Metal Structure (2010)
  • Author(s): Junki Sakamoto
  • Organizer: International Conference on Science and Technology of Synthetic Metals 2010 (ICSM2010)
  • Place of Presentation: Kyoto International Conference Center, Kyoto
  • Year and Date: 2010-07-06
• [Presentation] Fluorescence Enhancement of a Conducting Polymer by Surface Plasmon on Biharmonic Silver Gratings (2010)
  • Author(s): Yasumasa Fujiwara
  • Organizer: International Conference on Science and Technology of Synthetic Metals 2010 (ICSM2010)
  • Place of Presentation: Kyoto International Conference Center, Kyoto
  • Year and Date: 2010-07-06
• [Presentation] Surface Plasmon Enhanced Photoluminescence on Biharmonic Grating Structure (2010)
  • Author(s): Yasumasa Fujiwara
  • Organizer: International Conference on Nanophotonics 2010
  • Place of Presentation: Tsukuba, Ibaraki
  • Year and Date: 2010-06-01
• [Presentation] Electrical tuning of Surface Plasmon Polaritons using Twisted Nematic Liquid Crystal on Metallic Grating Structure (2010)
  • Author(s): Yasuhiro Ogawa
  • Organizer: International Conference on Nanophotonics 2010
  • Place of Presentation: Tsukuba, Ibaraki
  • Year and Date: 2010-05-30
• [Presentation] Fabrication and Photovoltaic Properties of Organic Solar Cells Based on Conducting Polymer-Fullerene Interpenetrating Systems (2009)
  • Author(s): Akihiko Fujii
  • Organizer: India-Japan workshop on Biomolecular Electronics & Organic Nanotechnology for Environment Preservation
  • Place of Presentation: New Dehli, India
  • Year and Date: 2009-12-19
• [Presentation] Organic thin-film solar cells based on conducting polymer-fullerene interpenetrating nano-interface (2009)
  • Author(s): Akihiko Fujii
  • Organizer: 2nd Global COE International Symposium (EDIS2009)
  • Place of Presentation: Osaka University, Suita
  • Year and Date: 2009-12-07
• [Presentation] Blend morphology control for efficient bulk heterojunction organic solar cells (2009)
  • Author(s): Jun Sakai
  • Organizer: 2nd Global COE International Symposium (EDIS2009)
  • Place of Presentation: Osaka University, Suita
  • Year and Date: 2009-12-07
• [Presentation] Inserting the Buffer layer Effects in Organic Thin-Film Solar Cells with Conducting Polymer/Fullerene Interpenetrating Interface (2009)
  • Author(s): Tetsuro Hori
  • Organizer: 2009 MRS Fall Meeting
  • Place of Presentation: Boston, USA
  • Year and Date: 2009-11-30
• [Presentation] Efficient Emission Properties and Electroluminescent Devices of F8BT : MDDOPPV Composite Thin Film (2009)
  • Author(s): Naoyuki Yamasaki
  • Organizer: 2009 MRS Fall Meeting
  • Place of Presentation: Boston, USA
  • Year and Date: 2009-11-30
• [Presentation] Fabrication and Photovoltaic Properties of Flexible Organic Thin-Film Solar Cells Based on Conducting Polymer-Fullerene Interpenetrating Systems (2009)
  • Author(s): Akihiko Fujii
  • Organizer: International Conference on Plasma Surface Engineering
  • Place of Presentation: Busan, Korea
  • Year and Date: 2009-09-22
• [Presentation] Efficient organic photovoltaic tandem cells with poly(3-hecylthiophene) : fullerene active layers and transparent conductive oxide interlayer (2009)
  • Author(s): Jun Sakai
  • Organizer: 34th IEEE Photovoltaic Specialists Conference 2009
  • Place of Presentation: Philadelphia, USA
  • Year and Date: 2009-06-07
• [Book] 有機半導体デバイス-基礎から最先端材料・デバイスまで- (2010)
  • Author(s): 尾崎雅則
  • Publisher: オーム社
• [Book] プリンテッドエレクトロニクス技術最前線 (2010)
  • Author(s): 藤井彰彦
  • Publisher: シーエムシー出版(印刷中)
• [Patent(Industrial Property Rights)] 特許権 (2010)
  • Inventor(s): 清水洋、尾崎雅則、藤井彰彦、堀哲郎、三宅康雄
  • Industrial Property Rights Holder: 産業技術総合研究所大阪大学
  • Industrial Property Number: 2010-149044
  • Filing Date: 2010-06-30