Technology Area

Solar Cell and Solar Energy Systems

Outline of the area

Atsuhiro Osuka
Professor, Kyoto University

Solar energy use, including solar cells, has already prevailed in the society as one of the extremely promising technologies for renewable energy. Competing with the commercial Si-based solar cell module technologies, we wish to further develop the solar cell and solar energy utilizing system which are addressed in ALCA.

Specifically, the project is to be subjected for development of the solar cell with high power conversion efficiency (compared with the conventional solar cell), production of new materials for solar cells, creation of manufacturing process of low cost solar cells such as large surface manufacturing technology, and development of a solar energy utilizing system integrated with these technologies. Especially, we are going to promote the research and development in perovskite solar cells, which were first reported by Miyasaka et al. in Japan and have been addressed in the ALCA Tech. Area. In addition, we also aim to develop other innovative solar thermal energy technology.


Development of High-Efficiency Polymer-Based Solar Cells

Itaru Osaka
Professor, Graduete School of Engineering, Hiroshima University

Organic solar cells based on semiconducting polymers, "plastic" solar cells, are expected to be a technology with low-cost and low-enviromental impact. In this project, we will create new high-performance semiconducting polymers by controlling their electronic and ordering structures, and aim at the energy converion efficiency of 15% which has not been achieved for "plastic" solar cells.


Electricity Generation by Combination of Solar-Pumped Lasers and PV Devices Specially Designed for Monochromatic Laser Light

Tomoyoshi Motohiro
Professor, GREMO, Nagoya University

We have fabricated a compact solar-pumped laser unit with a φ50 parabolic mirror and attained stable/continuous generation of laser light on a solar-tracking system. 2D array of the units makes the system scalable for a higher output power. Sunlight is once converted to a monochromatic laser light, and then it is converted to electricity efficiently using PV devices specially designed for the monochromatic intense laser light spot. Taking advantage of transmission of the laser light, the PV devices are separately retained in a conditioned room enabling long-term durability of high conversion efficiency even under extreme weather condition.

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