Environment and Energy

Energy System

Sugiyama Laboratory

Material
Environment and Energy

High-efficiency photovoltaics for green hydrogen production
Information
Chemical Biomedicine

To achieve carbon neutrality, CO 2 -free hydrogen is indispensable. Disruptive
installation of photovoltaics is expected as a power source to produce greenhydrogen in the regions with high irradiance. For this purpose, there is a growing
expectation for high efficiency solar cells, far superior to conventional siliconsolar cells. The key to achieving high efficiency lies in semiconductor nanocrystal
technology. We are conducting research and development rooted in material
chemistry and physics, from crystal growth to system evaluation of solar cells.

Professor

Masakazu SUGIYAMA

Research Area
Photovoltaic technology, energy system, carbon recycling

Associate Professor

Tsutomu MINEGISHI
Research Area

Photocatalyst・Photoelectrode, carbon recycling

Barrier Free

Physics of photocatalysts for producing hydrogenfrom sunlight and waterSocial Science

Photocatalysis is expected to be the ultimate technology for low-cost solarhydrogen production. In order to improve the efficiency of photocatalysts, it isessential to investigate the band structure of the interface between thesemiconductor, which is responsible for the generation of photovoltaic power,
and water, and to design a structure that can learn from high-efficiency solarcells. We are simultaneously developing new analytical methods and exploringhighly efficient photocatalysts.

Laboratory forInterdiciplinary Activities

A system to produce green chemicals from CO2

Cooperative Laboratories

In order to supply fuels that cannot be covered by CO 2 -free hydrogen, it isexpected to realize a system to produce green chemicals by reducing therecovered CO 2 with renewable energy. We are developing systems that takeadvantage of the benefits of electrochemistry, such as the development of areaction field that can efficiently produce the desired hydrocarbons from CO 2 ,utilizing our knowledge of fuel cells and water electrolyzers.

Project Associate Professor

Kentaroh WATANABE

Project Associate Professor Hiromu KUMAGAI
Assistant Professor

Meita ASAMI

Project Assistant Professor

Hassanet SODABANLU
ColumnOne of the pleasures of being a university faculty
member is interacting with a diverse range ofpeople both domestically and internationally, andexpanding one’s network (and perhaps one’sstomach as well).
The first places I head to on business trips aresupermarkets, and if possible, local markets. As aweekend chef, the moments spent exploring
unfamiliar soy sauces and seasonings domestically,or astonishingly large cuts of meat (though I can'ttake those home...), and cheeses abroad, whilelooking for souvenirs and experiencing the local

Social Cooperation
Research Departments

terroir, provide a blissful escape from theassignments I carry with me to the trip.
The most important thing is to fully enjoy thejourney to the destination. Did you know that there
is a wide variety of toilets on Shinkansen trains,

Corporate SponsoredResearch Programs

including whether or not they have bidet seats? Thediversity on airplanes is even more remarkable.
1 High-efficiency solar cellswith nano-epitaxial structures

2 Photocatalysts for H 2 production
with high efficiency PV structure

Enjoying a fine drink in the best seat I meticulously
reserved, while contemplating the origin of today’s
aircraft, is a delight that makes me grateful to be

Research Organization

alive.

http://www.enesys.rcast.u-tokyo.ac.jp/
sugiyama@enesys.rcast.u-tokyo.ac.jp
tmine@enesys.rcast.u-tokyo.ac.jp

3 An electrochemical system for producing green chemicals from CO 2148