| Budget Amount *help |
¥21,840,000 (Direct Cost: ¥16,800,000、Indirect Cost: ¥5,040,000)
Fiscal Year 2020: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2018: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
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| Outline of Final Research Achievements |
In this research, a group III-V compound semiconductor (GaAs) with a thin film will synthesized directly on a light and flexible plastic substrate to build a basic technology for a "ubiquitous solar cell" that has both high efficiency and wide versatility. For the first time, the correlation between the crystal grain size and the photoresponsivity of a polycrystalline GaAs thin film was clarified experimentally. The GaAs film with the largest grain size on glass and plastic substrates and the highest photoresponsivity were demonstrated. These achievements will open up the possibility of realizing flexible multi-junction solar cells.
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