Thermoelectric conversion material, thermoelectric conversion element, article for thermoelectric power generation and power supply for sensor

Patent metadata

Field	Value
Publication number	US-2016013390-A1
Application number	US-201514862264-A
Country	US
Kind code	A1
Filing date	Sep 23, 2015
Priority date	Mar 29, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

A thermoelectric conversion element 1 having, on a substrate 12 , a first electrode 13 , a thermoelectric conversion layer 14 , and a second electrode 15 , wherein a nano conductive material and a low band gap material are contained in the thermoelectric conversion layer 14 ; an article for thermoelectric power generation and a power supply for a sensor using the thermoelectric conversion element 1 ; and a thermoelectric conversion material containing the nano conductive material and the low band gap material.

First claim

1 . A thermoelectric conversion element comprising, on a substrate, a first electrode, a thermoelectric conversion layer, and a second electrode,
wherein a nano conductive material and a low band gap material are contained in the thermoelectric conversion layer, and an optical band gap of the low band gap material is 0.1 eV or more and 1.1 eV or less.

2 . The thermoelectric conversion element according to claim 1 , wherein the low band gap material is a charge-transfer complex composed of an organic electron donor and an organic electron acceptor.

3 . The thermoelectric conversion element according to claim 2 , wherein the organic electron donor is a compound having an aromatic ring structure.

4 . The thermoelectric conversion element according to claim 2 , wherein the organic electron donor is a compound having a condensed ring structure with three or more rings, and the condensed ring has an aromatic ring structure.

5 . The thermoelectric conversion element according to claim 2 , wherein the organic electron donor is a compound having a carbazole structure or a fluorene structure.

6 . The thermoelectric conversion element according to claim 1 , wherein the low band gap material is a metal complex.

7 . The thermoelectric conversion element according to claim 6 , wherein, in the metal complex, at least one of atoms that coordinate to the central metal is a sulfur atom or an oxygen atom.

8 . The thermoelectric conversion element according to claim 6 , wherein the central metal of the metal complex is a metal atom selected from the group consisting of Ni, Fe, Cu and Sn, or a metal ion thereof.

9 . The thermoelectric conversion element according to claim 6 , wherein the metal complex is a compound represented by Formula (3):

wherein, in Formula (3), M is a metal atom selected from the group consisting of Ni, Fe, Cu and Sn, or a metal ion thereof; when M is a metal ion, the compound represented by Formula (3) may have an arbitrary counter ion; X 11 , X 12 , X 13 and X 14 each independently represent a hetero atom; at least one of X 11 to X 14 is a sulfur atom or an oxygen atom; R 11 , R 12 , R 13 and R 14 , each independently represent a substituent; R 11 and R 12 may be bonded to each other; and R 13 and R 14 may be bonded to each other.

10 . The thermoelectric conversion element according to claim 1 , wherein the low band gap material is an arylamine compound.

11 . The thermoelectric conversion element according to claim 10 , wherein the arylamine compound is a compound represented by Formula (5), or a one- or two-electron oxidized derivative of the compound represented by Formula (5):

wherein, in Formula (5), Ar 51 to Ar 55 each independently represent an aromatic hydrocarbon ring, an aromatic heterocycle, a single bond, or an alkylene group, proviso that at least one of Ar 51 and Ar 52 is an aromatic hydrocarbon ring and at least one of Ar 53 and Ar 54 is an aromatic hydrocarbon ring; R 51 to R 55 each independently represent a substituent; n 51 to n 55 each independently represent an integer of 0 to 3; and m1 represents 0 or 1.

12 . The thermoelectric conversion element according to claim 11 , wherein, in Formula (5), R 51 to R 54 each independently represent a dialkylamino group, a diarylamino group, or an alkoxy group.

13 . The thermoelectric conversion element according to claim 1 , wherein the thermoelectric conversion layer contains at least one polymer selected from a conjugated polymer and a non-conjugated polymer.

14 . The thermoelectric conversion element according to claim 1 , wherein the nano conductive material is at least one kind of material selected from the group consisting of a carbon nanotube, a carbon nanofiber, graphite, graphene, carbon nanoparticles and a metal nanowire.

15 . The thermoelectric conversion element according to claim 1 , wherein the nano conductive material is a carbon nanotube.

16 . The thermoelectric conversion element according to claim 1 , wherein the first electrode and the second electrode each independently are formed by aluminum, gold, silver, or copper.

17 . An article for thermoelectric power generation using the thermoelectric conversion element according to claim 1 .

18 . A power supply for a sensor using the thermoelectric conversion element according to claim 1 .

19 . A thermoelectric conversion material for forming a thermoelectric conversion layer of a thermoelectric conversion element, the material comprising a nano conductive material and a low band gap material, wherein an optical band gap of the low band gap material is 0.1 eV or more and 1.1 eV or less.

20 . The thermoelectric conversion material according to claim 19 , comprising at least one polymer selected from a conjugated polymer and a non-conjugated polymer.

Assignees

• Fujifilm Corp

Inventors

• Nishio Ryo
• Hamasaki Ryo
• Nomura Kimiatsu
• Maruyama Yoichi

Classifications

• H01L35/32

  Electricity · mapped topic

• H01L35/24 Primary

  Electricity · mapped topic

• C08G2261/1412

  Saturated aliphatic units · CPC title

• C08G2261/228

  Polymers, i.e. more than 10 repeat units · CPC title

• C08G2261/312

  Non-condensed aromatic systems, e.g. benzene · CPC title