Dept. Mech.& Aerospace Eng., Env. & Energy Eng.
Grad. Sch. Env. Studies, Dept. Env. Studies for Adv. Soc.
Prof. Takahisa OMATA
Assis. Prof. Issei SUZUKIOMATA Lab.
IMRAM, Atomic Site Control in Inorganic Materials

D3 Aman SHARMA D2 Rantaro MATSUO D1 Taichi NOGAMI
M2 Saki KUDO, Pengbo ZHU
M1 Takuma SHIRAIWA, Taiki MOTAI, Kei TOYO-OKA
B4 Mayu OBINATA, Kako WASHIDZU
Postgraduate Yan KE

VISIT our web site!

Develop energy and environmentally-conscious materials !
Most innovations have been triggered by advent of new materials, and the present energy, environmental and resource issues are expected
to be solved by new materials. We focus on to explore new materials and their synthesis routes using ion-exchange and ionic intercalation
techniques. Proton conducting phosphate glasses working at intermediate temperatures and narrow gap oxide semiconductors applicable tothin-film solar cells have been recently developed. Simple and safe synthesis routes to cadmium-free quantum dot phosphors and colloidal
indium arsenide quantum dots for solar cells were also found out. Thin-film solar cells, fuel cells and light-emitting devices using thosematerials are now developing.

Theme 1 Biomass-based fuel cells (FCs) to achieve carbon-neutral society !
Bio-methanol FCs*Bio-methanol can be obtained from wood waste unlike bio-ethanol that is obtained from corn and soybean; it does not compete against food.

New solid electrolytes, H+-conductors, are required to materialize the bio-methanol

Load

We have achieved
world's highest-proton-conductivity at
the temperatures where methanol FCworks.

CH3OH
H2O

We are now developing
new material for efficiently
extracting current from methanol FC.

Solid Electrolyte(H+-conductor)

Theme 2H 2O

O2 Electrode/gasinterfaceeH+

ElectrodeElectrolyte

Solar cell consisting of eco-friendly materials !

Eco-friendly solar cells using non-hazardous and an abundant resources ・・・ Safe and low-cost solar cells
Our original material

World’s first
SnS homojunction solar cells

World’s firstn-type SnS film

SnS

β-CuGaO2

Theme 3

We aspire self-sufficiency in home electricity in 2030 !

Find outstanding materials by combination of elements!
Absorption Coefficient / cm-1

86420-2-4

Cu3AsO4

Solar cell materials

105104

Cu3AsO4103

CdTe

GaAs

Infinite number of combination of elements from theperiodic table…

Crystal Si

102101100-6

Cu3AsS4
1.0

1.5
2.0
Photon energy / eV

2.5First-principles calculation-8
Γ

ZTYS X
Wave vector

UCherry-blossom viewing

We are exploring new outstanding material byunderstanding the properties of each elements andthe characteristics of the crystal structures

RLab events
Conference

We are now developing thin-film solarcells using oxide semiconductor that was
found in our laboratory.

Welcoming
party

OB/OG place of employment
Tohoku Univ., AIST, JSPS, JR-West,Toray, TOYOTA, Hitachi Zosen, Toyama
Murata Manufacturing,
Sumitomo
Electric Industries , UACJ, Mitsui Mining& Smelting, Sumitomo Metal Mining,
Mitsubishi Materials, JX Nippon Mining& Metals, DOWA, Nihon Alps, NOHMI,
Japan Aviation Electronics

Katahira campus

研究室について詳しく知りたい方は、下記のe-mailか
E-mail: takahisa.omata.c2@tohoku.ac.jp
Omata Lab.

問い合わせフォームから連絡をして下さい!

Feel free to contact us by e-mail (omata@tohoku.ac.jp) for
further information on our laboratory!

生協