公开(公告)号：US20170331025A1

公开(公告)日：2017-11-16

申请号：US15585886

申请日：2017-05-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroyuki SUTO ,  Hidenari YAMAMOTO

IPC: H01L35/32 ,  H01L35/20 ,  H01L35/22 ,  H01L35/30

CPC classification number: H01L35/32 ,  H01L35/20 ,  H01L35/22 ,  H01L35/30

Abstract: A thermoelectric conversion device including an n-type thermoelectric converter, a p-type thermoelectric converter, a high temperature-side electrode with which one end of the n-type thermoelectric converter and one end of the p-type thermoelectric converter are put into contact, a first low temperature-side electrode in contact with another end of the n-type thermoelectric converter, and a second low temperature-side electrode in contact with another end of the p-type thermoelectric converter, wherein in the n-type thermoelectric converter, the side in contact with the high temperature-side electrode is composed of a carrier generation semiconductor containing Mg2Sn, and in the n-type thermoelectric converter, the side in contact with the first low temperature-side electrode is composed of a carrier transfer semiconductor containing Mg2Si1-xSnx, wherein 0.6≦x≦0.7, and a first n-type dopant.

公开(公告)号：US20170306445A1

公开(公告)日：2017-10-26

申请号：US15439004

申请日：2017-02-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hidenari YAMAMOTO ,  Hiroyuki SUTO

IPC: C22C1/04 ,  B22F9/04 ,  B22F3/02 ,  C22C13/00 ,  H01L35/20 ,  B22F3/14 ,  H01L35/34

CPC classification number: C22C1/0483 ,  B22F3/02 ,  B22F3/14 ,  B22F9/04 ,  B22F2301/052 ,  B22F2301/058 ,  B22F2301/30 ,  B22F2302/45 ,  B22F2998/10 ,  C22C13/00 ,  H01L35/20 ,  H01L35/34 ,  B22F1/0003 ,  B22F1/0085

Abstract: A method for producing a thermoelectric material, comprising: mixing an Sn powder and a powder containing a first dopant element to obtain a first mixed raw material, heating the first mixed raw material at a temperature allowing for mutual diffusion of Sn and the first dopant element to obtain a first aggregate, pulverizing the first aggregate to obtain a first powder, mixing an Mg powder, an Si powder, and the first powder to obtain a second mixed raw material, heating the second mixed raw material at a temperature allowing for mutual diffusion of Mg, Si, Sn and the first dopant element to obtain a second aggregate, pulverizing the second aggregate to obtain a second powder, and pressure-sintering the second powder, and wherein the first dopant element is one or more elements selected from Al, Ag, As, Bi, Cu, Sb, Zn, P, and B.

公开(公告)号：US20180287033A1

公开(公告)日：2018-10-04

申请号：US15936658

申请日：2018-03-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinsuke HIRONO ,  Hiroyuki SUTO

IPC: H01L35/18 ,  H01L35/34 ,  H01L35/28

Abstract: To provide a thermoelectric conversion material having an enhanced thermoelectromotive force and a production method thereof. A thermoelectric conversion material including a matrix and a barrier material, wherein the matrix contains Mg2Si1-xSnx (x is from 0.50 to 0.80) and an n-type dopant and the barrier material contains Mg2Si1-ySny (y is from 0 to 0.30), and a production method thereof. A thermoelectric conversion material and a production method thereof, in which the movement of minority carrier is blocked by a barrier material and the thermoelectromotive force is thereby enhanced, can be provided.