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Patent Searching and Data


Title:
THERMOELECTRIC CONVERSION ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/039074
Kind Code:
A1
Abstract:
This thermoelectric conversion element comprises: a thermoelectric conversion material part which is composed of a compound semiconductor comprising a first base material element A and a second base material element B, and is represented by Ax-cBy in which the value of x is smaller by c with respect to a compound AxBy according to the stoichiometric ratio; a first electrode that is disposed in contact with the thermoelectric conversion material part; and a second electrode that is disposed in contact with the thermoelectric conversion material part and separated from the first electrode. The A-B state diagram includes a first region that corresponds to a low temperature phase, a second region that corresponds to a high temperature phase, and a third region that corresponds to a coexisting phase which is sandwiched between the low temperature phase and the high temperature phase, the low temperature phase and the high temperature phase coexisting in the coexisting phase. The temperature of the boundary between the first region and the third region varies monotonically with the change in c.

Inventors:
ADACHI MASAHIRO (JP)
YAMAMOTO YOSHIYUKI (JP)
TAKEUCHI TSUNEHIRO (JP)
Application Number:
PCT/JP2020/024772
Publication Date:
March 04, 2021
Filing Date:
June 24, 2020
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
TOYOTA SCHOOL FOUND (JP)
International Classes:
H01L35/16; C01B19/04; C01G3/12; H01L35/32
Foreign References:
JP2016534562A2016-11-04
Other References:
HE YING, DAY TRISTAN, ZHANG TIANSONG, LIU HUILI, SHI XUN, CHEN LIDONG, SNYDER G. JEFFREY: "High Thermoelectric Performance in Non-Toxic Earth-Abundant Copper Sulfide", ADVANCED MATERIALS, vol. 26, no. 23, 26 March 2014 (2014-03-26), pages 3974 - 3978, XP055794216, DOI: 10.1002/adma.201400515
BYEON DOGYUN, SOBOTA ROBERT, DELIME-CODRIN KÉVIN, CHOI SEONGHO, HIRATA KEISUKE, ADACHI MASAHIRO, KIYAMA MAKOTO, MATSUURA TAKASHI, : "Discovery of colossal Seebeck effect in metallic Cu2Se", NATURE COMMUNICATIONS, vol. 10, no. 72, 8 January 2019 (2019-01-08), pages 1 - 7, XP055794218, DOI: 10.1038/s41467-018-07877-5
BYEON, DOGYUN ET AL.: "Dynamical variation of carrier concentration and colossal Seebeck effect in Cu2S low-temperature phase", JOURNAL OF ALLOYS AND COMPOUNDS, vol. 826, 5 February 2020 (2020-02-05), pages 154155 - 1 - 154155-6, XP086085307, DOI: 10.1016/ j.jallcom.2020.154155
Attorney, Agent or Firm:
KITANO, Shuhei et al. (JP)
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