Control of band structure of multiple band gap semiconductor and its application to high-efficiency solar cell

• Project/Area Number: 15K04662
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Crystal engineering
• Research Institution: University of Yamanashi
• Principal Investigator: NABETANI Yoichi 山梨大学, 大学院総合研究部, 教授 (30283196)
• Co-Investigator(Kenkyū-buntansha): 松本 俊 山梨大学, 大学院総合研究部, 教授 (00020503) ; 村中 司 山梨大学, 大学院総合研究部, 准教授 (20374788)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 太陽電池

Outline of Final Research Achievements

The renewable energy solar shell is indispensable now that the energy problem is serious. In this research, for the purpose of improving the efficiency of solar cells, we fabricated semiconductors with intermediate bands and evaluated their properties. In the semiconductor to which oxygen is added to ZnTe, an intermediate band is formed. Optimization of oxygen composition is necessary to achieve high efficiency. In theory, the oxygen composition was calculated to be 2%, whereas the oxygen composition that could be produced so far was 1%. Sulfur (S) was added to increase the oxygen composition.

Research Products

• [Presentation] 中間バンド型太陽電池に向けたZnO/ZnTeOヘテロ接合の作製 (2016)
  • Author(s): 小野田翔太、鍋谷暢一、村中司
  • Organizer: 第5回結晶工学未来塾
  • Place of Presentation: 東京農工大学（東京都小金井市中町2-24-16）
• [Presentation] ZnTeのn型層および電極の作製と電気的特性の評価 (2016)
  • Author(s): 張振宇、鍋谷暢一、村中司
  • Organizer: 第5回結晶工学未来塾
  • Place of Presentation: 東京農工大学（東京都小金井市中町2-24-16）
• [Presentation] ZnTeO混晶のエピタキシャル成長および構造評価 (2016)
  • Author(s): 神田将平、鍋谷暢一、村中司
  • Organizer: 第5回結晶工学未来塾
  • Place of Presentation: 東京農工大学（東京都小金井市中町2-24-16）
• [Presentation] ZnTeO混晶のエピタキシャル成長と構造および光学特性評価 (2015)
  • Author(s): 坂本宏貴、神田将平、鍋谷暢一、村中司
  • Organizer: 第4回結晶工学未来塾
  • Place of Presentation: 東京農工大学
  • Year and Date: 2015-10-29
• [Presentation] ZnTeO太陽電池に向けたZnO/ZnTeヘテロ接合の作製 (2015)
  • Author(s): 笠井遼太郎、大石将平、鍋谷暢一、村中司
  • Organizer: 第4回結晶工学未来塾
  • Place of Presentation: 東京農工大学
  • Year and Date: 2015-10-29
• [Presentation] ZnTeのn型層および電極の作製と電気的特性の評価 (2015)
  • Author(s): 鎌矢祐紀元、張振宇、鍋谷暢一、村中司
  • Organizer: 第4回結晶工学未来塾
  • Place of Presentation: 東京農工大学
  • Year and Date: 2015-10-29
• [Presentation] アニール処理したZnO-TFTの電流DLTS (2015)
  • Author(s): 若林岳、池内達紀、佐々木涼介、村中司、鍋谷暢一、松本俊
  • Organizer: 第4回結晶工学未来塾
  • Place of Presentation: 東京農工大学
  • Year and Date: 2015-10-29
• [Presentation] 大面積PC基板上に形成したGZO透明導電膜の構造および特性評価 (2015)
  • Author(s): 岡島康介、村中司、鍋谷暢一、松本俊、平木哲
  • Organizer: 第4回結晶工学未来塾
  • Place of Presentation: 東京農工大学
  • Year and Date: 2015-10-29
• [Presentation] Hopping exciton model of photoluminescence in ZnSeO alloy (2015)
  • Author(s): M. Baranowski, M. Welna, R. Kudrawiec, M. Latkowska, Y. Nabetani J. Misiewicz, and W. Walukiewicz
  • Organizer: 17th International Conference on II-VI and Compounds and Related Materials
  • Place of Presentation: Paris, France
  • Year and Date: 2015-09-17
  • Int'l Joint Research
• [Presentation] Structural, Electrical and Optical Properties of Ga-Doped ZnO Films Grown on Flexible Substrates by Using Plasma-assisted Molecular Beam Deposition (2015)
  • Author(s): T. Muranaka, Y. Oyaizu, K. Takasho, S. Nakajima, K. Okajima, K.Nakakashima, Y Nabetani, T. Matsumoto, S. Iwamoto, S. Hiraki, H. Kono, and S. Hagihara
  • Organizer: 17th International Conference on II-VI and Compounds and Related Materials
  • Place of Presentation: Paris, France
  • Year and Date: 2015-09-14
  • Int'l Joint Research
• [Remarks] 研究室ホームページ
  • URL: http://www.ccn.yamanashi.ac.jp/~nabetani/