THERMOELECTRIC MATERIAL AND THERMOELECTRIC MODULE

THERMOELECTRIC MATERIAL AND THERMOELECTRIC MODULE

A thermoelectric material includes a parent phase in which an MgSiSn alloy is a main component, a void formed in the parent phase, and a silicon layer that is formed on at least a wall surface of the void and that includes silicon as a main component. The thermoelectric material further includes MgO...

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Hauptverfasser: Tsurumi, Shigeyuki, MATOBA, Akinari, MINAMIKAWA, Toshiharu, YASUDA, Kazumasa, TOYODA, Takeshi, SOTOME, Takeshi, KOYANO, Mikio
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ELECTRICITY
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creator Tsurumi, Shigeyuki
MATOBA, Akinari
MINAMIKAWA, Toshiharu
YASUDA, Kazumasa
TOYODA, Takeshi
SOTOME, Takeshi
KOYANO, Mikio
description A thermoelectric material includes a parent phase in which an MgSiSn alloy is a main component, a void formed in the parent phase, and a silicon layer that is formed on at least a wall surface of the void and that includes silicon as a main component. The thermoelectric material further includes MgO in an amount of 1.0 wt. % or more and 20.0 wt. % or less. The silicon layer includes amorphous Si, or amorphous Si and nanosized Si crystals, and the parent phase includes a region in which the composition ratio of the Si of the chemical composition of the MgSiSn alloy is higher than in the other regions and a region in which the composition ratio of the Sn of the chemical composition of the MgSiSn alloy is higher than in the other regions. With these configurations, the thermoelectric material realizes both lower thermal conductivity and lower electrical resistivity.
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title THERMOELECTRIC MATERIAL AND THERMOELECTRIC MODULE
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