Thermoelectric conversion material, method for manufacturing same, and thermoelectric conversion element
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United States of America Patent
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Nov 25, 2003
Grant Date -
Jun 13, 2002
app pub date -
Oct 10, 2001
filing date -
Oct 11, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cuboid p-type and an n-type thermoelectric conversion material having a composite of an alloy powder for a rare earth magnet and a bismuth-based thermoelectric conversion material that has been rendered a p-type semiconductor or an n-type semiconductor by the addition of the required dopant, are arranged alternately with a material with low thermal conductivity and high electrical resistivity interposed between them. The low- and the high-temperature sides of these thermoelectric conversion materials are connected with wires, a magnetic field is applied in the x axis direction, a temperature gradient .gradient.T is imparted in the z axis direction a p-n junction is created, and thermoelectromotive force is extracted from the connection end in a plane in the y axis direction. There is a marked increase in the Seebeck coefficient even though no magnetic field is applied externally.
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