Development of innovative solar cell device using ferroelectrics

2017 Fiscal Year Final Research Report

• Project/Area Number: 26249094
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: The University of Tokyo
• Principal Investigator: NOGUCHI Yuji 東京大学, 大学院工学系研究科(工学部), 准教授 (60293255)
• Co-Investigator(Kenkyū-buntansha): 井上 亮太郎 日本大学, 医学部, 助教 (50397626)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 強誘電体 / 太陽電池 / 可視光 / 光起電力 / 分極 / ドメイン

Outline of Final Research Achievements

"Word is in danger of survival. In addition, the future of human is threatened." The former US Vice President, Albert Arnold Gore, Jr., spoke about the current situation of the Earth facing the crisis and claimed that the development of clean energy sources is important. In this research, we have developed ferroelectric solar cell devices with improving photoelectric conversion characteristics under visible light. We discover "domain-wall photovoltaic effect", where the origin is different from the conventional bulk photovoltaic effect. We reveal that that it delivers a photovoltaic strength, i.e., 8,000 times as large as that of the conventional effect. We also propose a new material design "Gap-State Engineering" that can enhance the visible-light photovoltaic effect by several orders of magnitude.

Free Research Field

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