Institute of Multidisciplinary Research for Advanced Materials, Tohoku University


LAST UPDATE 2021/05/07

  • 研究者氏名
    Researcher Name

    小俣孝久 Takahisa OMATA
    教授 Professor
  • 所属
    Professional Affiliation

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

    金属資源プロセス研究センター 原子空間制御プロセス研究分野
    Center for Mineral Processing and Metallurgy, Atomic Site Control in Inorganic Materials
  • 研究キーワード
    Research Keywords

    Material Design
    Topotactic Ion-Exchange
    Proton Conductor
    Solar Cell Absorber
Research Subject
Development of inorganic energy conversion materials using ion-exchange

研究の背景 Background


Discovery of new functional materials has a potential to innovate technologies and social system. The materials that solve the present energy issues are hidden out somewhere. However, the common materials that consist of stable phase have already been much developed. In the future materials development, thermodynamically metastable materials that are practically stable under usage environment and their synthesis processes become more and more important.

研究の目標 Outcome


We develop new functional materials by exchange or insertion of mobile ions in precursor materials, of which atomic framework is properly designed to exhibit required property. Special attention is paid to provide materials related to fuel cells, photovoltaics and displays. We also develop prototype environmentally-conscious devices using the materials developed in order to demonstrate their functions.

研究図Research Figure

Fig.1. Schematic drawing of β-CuGaO2 semiconductor having a direct and narrow band gap semiconductor and photographs of its powder and film.Fig.2. Schematic drawing of fabrication process of H+-conducting glasses, a photograph of the glass obtained using this process and its fuel cell performance.Fig.3. TEM image of colloidal quantum dots (QDs) and cadmium-free QD-phosphors.

文献 / Publications

J. Am. Chem. Soc. 136, 3378(2014).  J. Mater. Chem. A 2, 3940(2014).  Chem. Mater. 18, 3330(2006).  Chem. Mater. 21, 2607(2009).