Tohoku University. Research Profiles


Developing energy creation and saving materials



Most innovations have been triggered by advent of new materials. We focus on to explore new inorganic materials and their synthesis routes on the basis of our knowledge about the material design and various materials processing technologies. We develop proton conducting phosphate glasses working at intermediate temperatures and narrow gap oxide semiconductors applicable in visible and NIR regions. Thin-film solar cells, fuel cells using those materials are also developing.

Targeted Application(s)/Industry

We focus on oxide semiconductors and proton conducting electrolytes and electrodes in order to apply them in solar cells, fuel cells, light-emitting devices. But, applicable area of our technologies is not limited in those applications.


Institute of Multidisciplinary Research for Advanced Materials (IMRAM)

OMATA Takahisa , Professor
Doctor of Engineering


Related Information

“Multinary wurtzite-type oxide semiconductors: present status and perspectives”, I. Suzuki, T. Omata, Semicond. Sci. Technol. 32, 013007(2017) (Invited Review) doi:10.1088/1361-6641/32/1/013007
“Electrochemical Substitution of Sodium Ions with Protons in Phosphate Glass to Fabricate Pure Proton Conducting Glass at Intermediate Temperatures”, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata, J. Mater. Chem. A, 2, 3940-3947(2014) doi:10.1039/C3TA14561A
“Proton-conducting phosphate glass and its melt exhibiting high electrical conductivity at intermediate temperatures”, T.Yamaguchi, S. Tsukuda, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe, T. Omata, J. Mater. Chem. A 6, 23628−23637 (2018). doi: 10.1039/c8ta08162j
“Ultra-thin phosphate glass exhibiting high proton conductivity at intermediate temperatures”, I. Suzuki, M. Tashiro, T. Yamaguchi, T. Ishiyama, J. Nishii, T. Yamashita, H. Kawazoe,T. Omata, Int. J. Hydrogen Energy 45, 16690−16697 (2020). (2020) doi: 10.1016/j.ijhydene.2020.04.114