| Budget Amount *help |
¥45,630,000 (Direct Cost: ¥35,100,000、Indirect Cost: ¥10,530,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥32,890,000 (Direct Cost: ¥25,300,000、Indirect Cost: ¥7,590,000)
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| Outline of Final Research Achievements |
In thermoelectric conversion technology that converts heat into electricity, metal oxides (thermally and chemically stable, harmless) are attractive thermoelectric material candidates, but because of their high thermal conductivity, there is a problem that their efficiency is lower than the conventional thermoelectric materials. In this study, in order to experimentally elucidate the effect of the nanoperiodic parallel plate structure on the thermal conductivity, single crystal thin films of metal oxides having a layered structure were prepared, and the thermal conductivity in the directions orthogonal to and parallel to the layer was precisely measured. 1) InGaO3(ZnO)m: It was found that the thermal conductivity of the nanoperiodic parallel plate structure in the plane perpendicular direction is lower than the thermal conductivity of polycrystals. 2) Layered cobalt oxide thin film: It was found that Ba1/3CoO2 thin film shows the highest room temperature figure of merit (ZT = 0.11).
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