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Omata-Suzuki-Yamasaki Lab
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The lab creates new materials that will be at the heart of solar cells and fuel cells.
AboutAbout the lab
Creating materials for energy and low environmental impact
The Omata-Suzuki-Yamasaki Lab studies new materials that will be at the heart of solar cells and fuel cells.
The lab designs materials by understanding the features of atoms and crystal structures, and goes as far as developing new processes to actually make them.
By creating new materials, the lab hopes to contribute to solving energy problems.
Many members come from other universities and colleges of technology (KOSEN), and lab visits are accepted at any time.
Key terms
- Band gap
- An energy gap in a semiconductor that electrons cannot occupy. It determines which wavelengths of light the material can absorb
- Electrolyte
- A material that conducts ions. In a fuel cell, it carries ions from one side to the other
- Proton conduction
- The movement of hydrogen ions (protons) through a material. A property required of fuel cell electrolytes
NewsLab news
A master's student won the Outstanding Poster Presentation Award at the Solid State Ionics Seminar
Associate Professor Suzuki won the Fiscal 2026 Intelligent Cosmos Encouragement Award
A master's student won the Outstanding Student Presentation Award at the 93rd Annual Meeting of the Electrochemical Society of Japan
A doctoral student won the Best Award at the Symposium on Electronic Materials of the Ceramic Society of Japan
A master's student won the Best Poster Award at the Environmental Science Symposium
ResearchResearch themes
Building a low-carbon society with low environmental impact still leaves challenges, such as new ways of producing energy and ways of using limited resources effectively. The lab aims to create new materials that overcome these challenges and to contribute to building a 21st-century society that rests on both clean energy and energy saving.
*Illustrative imageSnS Solar Cells
SnS has a band gap of 1.1 eV and is made of inexpensive, nontoxic elements, so it is expected to be a new solar cell material. Aiming at high-efficiency SnS solar cells, the lab has worked on clarifying band alignment by XPS and fabricating n-type SnS thin films, and has made the world's first SnS homojunction solar cell.
*Illustrative imageAll-Oxide Thin-Film Solar Cells
Silicon solar cells, which are mainstream today, need thick silicon to absorb enough light, which makes them heavy and costly. Oxygen is a nontoxic element that is abundant on Earth, so the lab designs and searches for oxide semiconductors suited to thin-film solar cells, and has discovered a new material, β-CuGaO2. It is now working on making the material into thin films and controlling its electronic conductivity.
*Illustrative imageElectrolytes for Intermediate-Temperature Fuel Cells
Fuel cells that operate at 250–500°C need no precious-metal catalysts and can be built from inexpensive materials, but no electrolyte lets ions move freely at these temperatures. The lab has developed a method of injecting protons into glass at high concentration, and has produced glass electrolytes with proton conductivity among the highest in the world at around 300°C.
*Illustrative imageDevelopment of New Materials
To obtain high-performance materials, the lab studies new substances made by freely combining elements of the periodic table, as well as the processes that make them possible.
MembersFaculty
Members of the Omata-Suzuki-Yamasaki Lab consist of faculty, administrative assistants, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTakahisa Omata
- Associate ProfessorIssei Suzuki
- Associate ProfessorSakiko Kawanishi
- Assistant ProfessorTomoyuki Yamasaki
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Thin Film Flexible Solar PV Ken Fields 1” Fieldsken Ken Fields / CC BY-SA 3.0 (cropped)
- SnS Solar Cells: “Herzenbergite” David Hospital / CC BY-SA 4.0 (cropped)
- All-Oxide Thin-Film Solar Cells: “Copper oxide thin-film interference” Infinirivative / CC BY 4.0 (cropped)
- Electrolytes for Intermediate-Temperature Fuel Cells: “Solid oxide electrolyser cell 2x60cell stack” EERE / Public domain (cropped)
- Development of New Materials: “Periodic Table-1” Emeka Udenze / CC BY-SA 4.0 (cropped)
- Related lab (Kamitakahara-Umetsu Lab): “183486main MSRR-12” NASA / Public domain (cropped)
- Related lab (Kano-Kushimoto Lab): “Rhodium powder pressed melted” Alchemist-hp (talk) www.pse-mendelejew.de derivative work: Purpy Pupple (talk) / CC BY-SA 3.0 de (cropped)
- Related lab (Okamoto-Oyanagi Lab): “00 3571 Geothermal power plant in New Zealand” W. Bulach / CC BY-SA 4.0 (cropped)
- Related lab (Iizuka-Ho Lab): “ČBu, wastewater treatment plant 02” Czeva / CC BY-SA 4.0 (cropped)
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