Development of quantum dot/inorganic nanowire hybrid strucutres for efficient infrared solar cells

• Project/Area Number: 16H03824
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nanomaterials chemistry
• Research Institution: The University of Tokyo
• Principal Investigator: KUBO Takaya 東京大学, 先端科学技術研究センター, 特任教授 (10447328)
• Co-Investigator(Kenkyū-buntansha): 中崎 城太郎 東京大学, 大学院総合文化研究科, 特任准教授 (10444100)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥20,020,000 (Direct Cost: ¥15,400,000、Indirect Cost: ¥4,620,000); Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2016: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
• Keywords: 赤外光電変換 / コロイド量子ドット / ZnOナノワイヤ / 近赤外光電変換 / 酸化亜鉛ナノワイヤ / 量子ドット / ナノ材料 / 太陽電池

Outline of Final Research Achievements

Toward a reality of CO2 emission prevention, solar power generation need to be implemented into every corner in our modern society. To do so, development of low-cost and ultra-high efficiency solar cells is required. We then focused on solution-processed PbS QD/ZnO nanowire hybrid structures to construct efficient infrared solar cells. In this work, we carried out fundamental studies on carrier transport properties, band structures and so on, and achieved highly efficient conversion of solar energy into electricity in the infrared region.

Academic Significance and Societal Importance of the Research Achievements

本研究では，光誘起電荷分離後のキャリア輸送経路を空間的に分離する仕組みをZnO NW/PbS-QD で構築し、ZnO NW/PbS-QD の接合界面のバンド形状が電荷分離状態の安定化に与える効果などを明らかにし、高性能ハイブリッド構造構築の方向性を定量的に示すところに学術的な特徴がある。本研究成果は、様々な量子ドット固体膜を利用した光エネルギー変換材料の基盤構造を提供する。さらに，地球温暖化を抑制する取り組みとして，低コストと超高効率を両立する太陽電池の開発が望まれているが，量子ドットを用いた近赤外領域での高効率光電変換の実現は、低コスト多接合太陽電池の構築に大きく寄与する基礎技術である。

Research Products

• [Int'l Joint Research] The University of Perugia(イタリア)
• [Int'l Joint Research] CNRS(フランス)
• [Int'l Joint Research] The University of Perugia,(イタリア)
• [Int'l Joint Research] INAC/SPrAM CEA-Grenobl/Bourdeax University(フランス)
• [Int'l Joint Research] University of Perugia(イタリア)
• [Journal Article] Limiting factor of performance for solution-phase ligand-exchanged PbS quantum dot solar cell (2019)
  • Author(s): Fukuda Takeshi、Takahashi Akihiro、Takahira Kazuya、Wang Haibin、Kubo Takaya、Segawa Hiroshi
  • Journal Title: Solar Energy Materials and Solar Cells Volume: 195 Pages: 220-227
  • DOI: 10.1016/j.solmat.2019.03.011
  • Peer Reviewed
• [Journal Article] コロイド量子ドットを用いた太陽電池の現状と可能性 Current status of colloidal quantum-dot solar cells and their potential for ultra-high efficiency (2018)
  • Author(s): Haibin Wang, Takaya Kubo
  • Journal Title: 応用物理 OYO BUTURI Volume: 87 Pages: 16-20
• [Journal Article] Impedance analysis of PbS colloidal quantum dot solar cells with different ZnO nanowire lengths (2018)
  • Author(s): Takeshi Fukuda, Akihiro Takahashi, Haibin Wang, Kazuya Takahira, Takaya Kubo and Hiroshi Segawa
  • Journal Title: Japanese Journal of Applied Physics Volume: 57 Issue: 3S2 Pages: 03EJ02-03EJ02
  • DOI: 10.7567/jjap.57.03ej02
  • NAID: 210000148782
  • Peer Reviewed
• [Journal Article] Solution-processed short-wave infrared PbS colloidal quantum dot/ZnO nanowire solar cells giving high open-circuit voltage (2017)
  • Author(s): Haibin Wang, Takaya Kubo, Jotaro Nakazaki, Hiroshi Segawa
  • Journal Title: ACS Energy Letters Volume: 2 Issue: 9 Pages: 2110-2117
  • DOI: 10.1021/acsenergylett.7b00505
  • Peer Reviewed
• [Journal Article] Organic/Inorganic Hybrid Solar Cells Based on Colloidal Quantum Dots (2016)
  • Author(s): 王海濱, 久保貴哉, 瀬川浩司
  • Journal Title: Journal of the Japan Society of Colour Material Volume: 89 Issue: 8 Pages: 268-273
  • DOI: 10.4011/shikizai.89.268
  • NAID: 130005284202
  • ISSN: 0010-180X, 1883-2199
  • Acknowledgement Compliant
• [Presentation] IPEROP-19 (2019)
  • Author(s): Haibin Wang, Takaya Kubo, Jotaro Nakazaki, Hiroshi Segawa
  • Organizer: Efficient infrared PbS quantum dot solar cells toward the bottom subcell of tandem solar cells
  • Int'l Joint Research
• [Presentation] 応用物理学会春年会 (2019)
  • Author(s): 王海濱、C?sar Gagliardi,○久保貴哉,岡田至崇、瀬川浩司
  • Organizer: PbS量子ドット/ZnOナノワイヤ太陽電池のヘテロ接合界面修飾による開放電圧の向上
• [Presentation] 応用物理学会春年会 (2019)
  • Author(s): ○久保貴哉, 王海濱、瀬川浩司
  • Organizer: コロイド量子ドットを用いた赤外光電変換と超高効率太陽電池への可能性
  • Invited
• [Presentation] 日本化学会春年会 (2019)
  • Author(s): Haibin Wang, Shoichiro Nakao, Takaya Kubo, Hidenori Saito, Shinichi Magaino, Katsuhiko Takagi, Tetsuya Hasegawa, Jotaro Nakazaki, Hiroshi Segawa
  • Organizer: Development of high efficiency infrared PbS QD/ZnO NW solar cells toward the bottom subcell of multi-junction solar cells
• [Presentation] 10th Biannual Conference on Quantum dots (2018)
  • Author(s): Takaya Kubo, Haibin Wang, Shouichiro Nakao, Hidenori Saito, Shinichi Magaino, Katsumi Takagi, Tetsuya Hasegawa, Jotaro Nakazaki,Hiroshi Segawa
  • Organizer: Colloidal quantum dot-based photovoltaics with highly transparent conductive oxides in the short-wave infrared region
  • Int'l Joint Research
• [Presentation] the 22nd international conference on photochemical conversion and storage of solar energy (2018)
  • Author(s): Haibin Wang, Takaya Kubo, Jotaro Nakazaki, Hiroshi Segawa
  • Organizer: Infrared PbS colloidal quantum dot / ZnO nanowire solar cells
  • Int'l Joint Research / Invited
• [Presentation] ４D material (2018)
  • Author(s): Takaya Kubo, Haibin Wang, Hiroshi Segawa
  • Organizer: Quantum dot/wide-bandgap semiconductor hetero-junction interfaces engineering for efficient infrared solar cells
  • Int'l Joint Research / Invited
• [Presentation] ４D material (2018)
  • Author(s): Akihiro Takahashi, Kazuya Takahira, Takeshi Fukuda, Haibin Wang, Takaya Kubo, Hiroshi Segawa, Norihiko Kamata
  • Organizer: Enhanced power conversion efficiency of PbS QD/ZnO solar cells by thermal annealing
  • Int'l Joint Research
• [Presentation] SSDM2018 (2018)
  • Author(s): Takaya Kubo, Haibin Wang, Shouichiro Nakao, Hidenori Saito, Shinichi Magaino, Katsumi Takagi, Tetsuya Hasegawa, Jotaro Nakazaki, Hiroshi Segawa
  • Organizer: PbS quantum dot solar cells giving high spectral sensitivity in the infrared region
  • Int'l Joint Research
• [Presentation] SSDM2018 (2018)
  • Author(s): Haibin Wang, Takaya Kubo, Jotaro Nakazaki, Hiroshi Segawa
  • Organizer: Solution processed infrared PbS colloidal quantum dot / ZnO nanowire solar cells
  • Int'l Joint Research
• [Presentation] 応用物理秋学会 (2018)
  • Author(s): 王海濱, 中尾祥一郎，○久保貴哉，斎藤英純，馬飼野信一，高木克彦，長谷川哲也，中崎城太郎，瀬川浩司
  • Organizer: PbS量子ドット太陽電池の短波長赤外領域での光電変換特性の高性能化
• [Presentation] 4th E-MRS & MRS-J Bilateral symposium (2018)
  • Author(s): Takaya Kubo, Haibin Wang, Hiroshi Segawa
  • Organizer: Highly infrared-transparent oxides and ZnO nanowires for PbS colloidal quantum dot-based solar cells
  • Int'l Joint Research / Invited
• [Presentation] 2018 Materials Research Society Fall Meeting & Exhibit (2018)
  • Author(s): Takaya Kubo, Haibin Wang, Shoichiro Nakao, Hidenori Saito, Shinichi Magaino, Katsuhiko Takagi,Tetsuya Hasegawa, Jotaro Nakazaki, Hiroshi Segawa
  • Organizer: High efficiency infrared PbS colloidal quantum dot solar cells with 50% EQE at 1.55 μm
  • Int'l Joint Research
• [Presentation] Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV18) (2018)
  • Author(s): Takaya Kubo, Haibin Wang, Jotaro Nakazaki, Hiroshi Segawa
  • Organizer: Solution-processed colloidal-quantum-dot solar cells operating in the infrared region
  • Int'l Joint Research / Invited
• [Presentation] Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV18) (2018)
  • Author(s): Haibin Wang, Takaya Kubo, Jotaro Nakazaki, Hiroshi Segawa
  • Organizer: Efficient infrared solution-processed PbS quantum dot / ZnO nanowire solar cell
  • Int'l Joint Research
• [Presentation] 研究発表 第65回応用物理学秋季学術講演会 (2018)
  • Author(s): 王 海濱，○久保 貴哉，中崎 城太郎，瀬川 浩司
  • Organizer: PbS量子ドット/ZnOナノワイヤ太陽電池の光電変換特性の温度依存性
• [Presentation] 日本化学会第98春季年会(2018) (2018)
  • Author(s): Haibin Wang,
  • Organizer: Solution processed Infrared PbS Colloidal Quantum Dot / ZnO Nanowire Solar Cells
  • Invited
• [Presentation] 日本化学会第98春季年会(2018) (2018)
  • Author(s): Haibin Wang, Takaya Kubo, Jotaro Nakazaki, Hiroshi Segawa
  • Organizer: PbS quantum dot /ZnO nanowire solar cells operating in a wide range of the solar spectrum
• [Presentation] Quantum dot size dependent photovoltaic characteristics of PbS quantum dot/ZnO nanowire solar cells (2017)
  • Author(s): Haibin Wang, Takaya Kubo, Jotaro Nakazaki, and Hiroshi Segawa
  • Organizer: 日本化学会第97春季年会
  • Place of Presentation: 横浜、神奈川
  • Year and Date: 2017-03-16
• [Presentation] PbS量子ドット/ZnOナノワイヤ太陽電池の短波長赤外域での光電変換特性 (2017)
  • Author(s): 久保貴哉、王海濱、中崎城太郎、瀬川浩司
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: 横浜、神奈川
  • Year and Date: 2017-03-14
• [Presentation] 近赤外吸収AgBiS2ナノ粒子/ZnOナノワイヤ太陽電池の作製と光電変換特性 (2017)
  • Author(s): 久保貴哉、王海濱、中崎城太郎、瀬川浩司
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: 横浜、神奈川
  • Year and Date: 2017-03-14
• [Presentation] Solution-processed hybrid solar cells using lead sulfide colloidal quantum dots (2017)
  • Author(s): Takaya Kubo, Haibin Wang, and Hiroshi Segawa
  • Organizer: The International Conference Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV17)
  • Place of Presentation: Yohohama, Japan
  • Year and Date: 2017-02-02
  • Int'l Joint Research
• [Presentation] Efficiency enhancement of PbS colloidal quantum dot / ZnO nanowire solar cells in the near-infrared region and long-term stability (2017)
  • Author(s): Haibin Wang, Takaya Kubo, and Hiroshi Segawa
  • Organizer: The International Conference Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV17)
  • Place of Presentation: Yohohama, Japan
  • Year and Date: 2017-02-02
  • Int'l Joint Research
• [Presentation] ICMAT2017；Advanced inorganic Materials and Thin Film Technology for Solar Energy Harvesting (2017)
  • Author(s): Takaya Kubo, Haibin Wang, Jotaro Nakazaki, and Hirhoshi Segawa
  • Organizer: Solution processed quantum dots-based solar cells operating in a wide range of the solar spectrum
  • Int'l Joint Research
• [Presentation] M＆BE-9；9th International Conference on Molecular Electronics and Bioelectronics (2017)
  • Author(s): Takaya Kubo, Haibin Wang, Hirhoshi Segawa
  • Organizer: Solution-processed bybrid solar cells using colloidal quantum dot molecules
  • Int'l Joint Research / Invited
• [Presentation] Near and short-wavelength infrared PbS quantum dot / ZnO nanowire solar cells (2017)
  • Author(s): Haibin Wang, Takaya Kubo, Jotaro Nakazaki and Hiroshi Segawa
  • Organizer: TOEO-10；10th International Symposium on Transparent Oxide and Related Materials for Electronics and Optics
  • Int'l Joint Research / Invited
• [Presentation] International Union of Materials Research Societies - The 15th International Conference on Advanced Materials (2017)
  • Author(s): Takaya Kubo, Haibin Wang, Shouichiro Nakao, Hidenori Saito, Shinichi Magaino, Katsumi Takagi, Tetsuya Hasegawa, Jotaro Nakazaki, and Hiroshi Segawa
  • Organizer: Quantum dot-based solar cells with highly transparent conductive oxides for enhanced photocurrent in the short-wavelength infrared region
  • Int'l Joint Research / Invited
• [Presentation] International Union of Materials Research Societies - The 15th International Conference on Advanced Materials (2017)
  • Author(s): Haibin Wang, Takaya Kubo, Jotaro Nakazaki, Hiroshi Segawa
  • Organizer: Solution processed solar cells based on PbS colloidal quantum dot / ZnO nanowire heterojunctions
  • Int'l Joint Research
• [Presentation] 応用物理秋学会 (2017)
  • Author(s): 久保貴哉，王海濱，瀬川浩司
  • Organizer: 量子ドットを用いた太陽電池と様々な環境下での発電特性
  • Invited
• [Presentation] 応用物理秋学会 (2017)
  • Author(s): 王海濱 ，中尾 祥一郎 ，○久保貴哉，斎藤 英純 ，馬飼野 信一 ，高木 克彦，長谷川 哲也 ，中崎城太郎 ，瀬川浩司
  • Organizer: 高透過性透明導電膜を用いた量子ドット太陽電池の短波長赤外域の光電変換特性
• [Presentation] SSDM 2017; 2017 International Conference on Solid State Devices and Materials (2017)
  • Author(s): Takaya Kubo, Haibin Wang, and Hiroshi Segawa
  • Organizer: Solution-processed solar cells with nanostructured hybrid materials
  • Int'l Joint Research / Invited
• [Presentation] MRS (2017)
  • Author(s): Takaya Kubo, Haibin Wang, Jotaro Nakazaki,, Hiroshi Segawa
  • Organizer: Solution processed quantum dots-based solar cells operating in a wide range of the solar spectrum
  • Int'l Joint Research
• [Presentation] Photocatalysis 2&SIEMME'23 (2017)
  • Author(s): Haibin Wang, Takaya Kubo, Hiroshi Segawa
  • Organizer: Near and short-wave infrared PbS colloidal quantum dot / ZnO nanowire solar cells
  • Int'l Joint Research
• [Presentation] Colloidal quantum dot-based solar cells (2016)
  • Author(s): Takaya Kubo, Haibin Wang, and Hiroshi Segawa
  • Organizer: ICNME2016 (International Conference on Nano-Molecular Electronics)
  • Place of Presentation: Kobe, Japan
  • Year and Date: 2016-12-14
  • Int'l Joint Research / Invited
• [Presentation] PbS colloidal quantum dots-based solar cells with high external quantum efficiency in the near infrared region (2016)
  • Author(s): Takaya Kubo, Haibin Wang, Jotaro Nakazaki, and Hiroshi Segawa
  • Organizer: The 2017 MRS Fall Meeting and Exhibit
  • Place of Presentation: Boston, USA
  • Year and Date: 2016-11-26
  • Int'l Joint Research
• [Presentation] Solution processed solid state PbS quantum dot/ZnO nanowires solar cells with enhanced efficiency in the near infrared region (2016)
  • Author(s): Takaya Kubo, Haibin Wang, and Hiroshi Segawa
  • Organizer: E-MRS (European Materials Research Society) 2016 Fall Meeting
  • Place of Presentation: Warsaw, Poland
  • Year and Date: 2016-10-19
  • Int'l Joint Research / Invited
• [Presentation] PbS量子ドット/ZnO太陽電池特性のリガンド種依存性 (2016)
  • Author(s): 久保貴哉、王海濱、中崎城太郎、瀬川浩司
  • Organizer: 第77回応用物理学会秋季学術講演会
  • Place of Presentation: 新潟、新潟
  • Year and Date: 2016-09-13
• [Presentation] Solution processed hybrid solar cells based on colloidal quantum dots (2016)
  • Author(s): Takaya Kubo, Haibin Wang, Jotaro. Nakazaki, and Hiroshi Segawa
  • Organizer: The 6th AEARU Energy and Environmental Workshop
  • Place of Presentation: Tokyo Institute of Technology, Tokyo
  • Year and Date: 2016-08-26
  • Int'l Joint Research / Invited
• [Presentation] Morphology control of ZnO nanowires for colloidal quantum dot-based solar cells with enhanced efficiency in the near infrared region (2016)
  • Author(s): Takaya Kubo, Haibin Wang, and Hiroshi Segawa,
  • Organizer: E-MRS (European Materials Research Society) 2016 Spring Meeting
  • Place of Presentation: Lille, France
  • Year and Date: 2016-05-02
  • Int'l Joint Research / Invited
• [Presentation] Solution Processed Solar Cells Based on PbS Colloidal Quantum Dot / ZnO Nanowire Bulk Heterojunctions (2016)
  • Author(s): Haibin Wang, Takaya Kubo, Jotaro Nakazaki, and Hiroshi Segawa
  • Organizer: 2016 （ICFPE) International conference on flexible and printed electronics
  • Place of Presentation: 米沢、山形
  • Int'l Joint Research / Invited
• [Presentation] Efficiency enhancement of PbS colloidal quantum-dot/ZnO nanowire heterojunction solar cells (2016)
  • Author(s): Haibin Wang, Jotaro Nakazaki, Takaya Kubo, and Hiroshi Segawa
  • Organizer: 光化学討論会
  • Place of Presentation: 駒場、東京
• [Presentation] Efficiency Enhancement of PbS Colloidal Quantum Dot/ZnO Nanowire Solar Cells in the Near-Infrared Region (2016)
  • Author(s): Haibin Wang, Jotaro Nakazaki, Takaya Kubo, and Hiroshi Segawa
  • Organizer: The 10th aseanian conference on nano-hybrid solar cells
  • Place of Presentation: Beijing, China
  • Int'l Joint Research / Invited
• [Presentation] Efficiency Enhancement of PbS Colloidal Quantum Dot/ZnO Nanowire Solar Cells in the Near-Infrared Region (2016)
  • Author(s): Haibin Wang, Jotaro Nakazaki, Takaya Kubo, and Hiroshi Segawa
  • Organizer: the 22th China-Japan Bilateral Symposium on Intelligent Electrophotonic Materials and Molecular Electronics (SIEMME’ 22)
  • Place of Presentation: Suzhoum, China
  • Int'l Joint Research / Invited
• [Presentation] コロイド量子ドット太陽電池の基礎 (2016)
  • Author(s): 久保貴哉
  • Organizer: 光化学協会光化学応用講座2016
  • Place of Presentation: 駒場、東京
  • Invited