High temperature oxide-based system for thermoelectric sensor applications

Patent metadata

Field	Value
Publication number	US-12490654-B2
Application number	US-202017038736-A
Country	US
Kind code	B2
Filing date	Sep 30, 2020
Priority date	Sep 30, 2019
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

Disclosed herein are embodiments of n and p-type components with high temperature refractory material having a perovskite crystal structure. The material may be doped to generate, for example, p-type and n-type sensor legs. In some embodiments, expensive materials may be avoided. Further, the disclosed materials can avoid high temperature reaction between n-type components and p-type components.

First claim

What is claimed is:

1 . A thermoelectric system comprising:
a p-type material formed from LnAlO 3 doped with strontium and cobalt and having a perovskite structure with a general chemical composition of ABX 3 , A and B being cations Ln 1-x Sr x and Al 1-y Co y , X being an anion O 3+/−z that bonds to both A and B, the A cations located in corners of the perovskite structure, the B cations located in a body centered position, and the X anions sitting in face centered positions, the p-type material being Ln 1-x Sr x Al 1-y Co y O 3+/−z , x being between 0 and 1, y being between 0 and 1, and z<1; and an n-type material formed from LnAlO 3 doped with manganese and niobium and having a perovskite structure with a general chemical composition of ABX 3 , A and B being cations Ln and Al 1-x-y Mn y Nb x , X being an anion O 3+/−z that bonds to both A and B, the A cations located in corners of the perovskite structure, the B cations located in a body centered position, and the X anions sitting in face centered positions, the n-type material being LnAl 1-x-y Mn y Nb x O 3+/−z , x being between 0 and 0.2, y being between 0 and 1, and z<1.

2 . The thermoelectric system of claim 1 wherein the system does not contain platinum.

3 . The thermoelectric system of claim 1 wherein the system does not contain indium tin oxide.

4 . The thermoelectric system of claim 1 wherein the n-type material and p-type material are unreactive at temperatures of 400-1200° C.

5 . The thermoelectric system of claim 1 wherein Ln is selected from the group consisting of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Y, Yb, and Lu.

6 . The thermoelectric system of claim 1 wherein the thermoelectric system is configured to generate electricity.

7 . The thermoelectric system of claim 1 wherein the thermoelectric system is configured to measure temperature.

8 . The thermoelectric system of claim 1 wherein the thermoelectric system is configured to change a temperature of an object.

9 . The thermoelectric system of claim 1 further comprising a plurality of p-type components including the p-type material and a plurality of n-type components including the n-type material.

10 . The thermoelectric system of claim 9 further comprising a substrate supporting the p-type material and the n-type material.

11 . The thermoelectric system of claim 10 wherein the plurality of p-type components and the plurality of n-type components are arranged in a grid on the substrate.

12 . The thermoelectric system of claim 10 further comprising a plurality of electrical connections extending from the substrate.

13 . The thermoelectric system of claim 12 wherein the plurality of electrical connections include wires, tubes, or rods.

14 . The thermoelectric system of claim 1 further comprising a housing containing the p-type material and the n-type material.

15 . The thermoelectric system of claim 14 further comprising a plurality of electrical connections including wires, tubes, or rods.

16 . A thermoelectric sensor comprising:
a p-type material formed from LnAlO 3 doped with strontium and cobalt and having a perovskite structure with a general chemical composition of ABX 3 , A and B being cations Ln 1-x Sr x and Al 1-y Co y , X being an anion O 3+/−z that bonds to both A and B, the A cations located in corners of the perovskite structure, the B cations located in a body centered position, and the X anions sitting in face centered positions, the p-type material being Ln 1-x Sr x Al 1-y Co y O 3+/−z , x being between 0 and 1, y being between 0 and 1, and z<1; and an n-type material formed from LnAlO 3 doped with manganese and niobium and having a perovskite structure with a general chemical composition of ABX 3 , A and B being cations Ln and Al 1-x-y Mn y Nb x , X being an anion O 3+/−z that bonds to both A and B, the A cations located in corners of the perovskite structure, the B cations located in a body centered position, and the X anions sitting in face centered positions, the n-type material being LnAl 1-x-y Mn y Nb x O 3+/−z , x being between 0 and 0.2, y being between 0 and 1, and z<1.

17 . A thermoelectric electricity generator comprising:
a p-type material formed from LnAlO 3 doped with strontium and cobalt and having a perovskite structure with a general chemical composition of ABX 3 , A and B being cations Ln 1-x Sr x and Al 1-y Co y , X being an anion O 3+/−z that bonds to both A and B, the A cations located in corners of the perovskite structure, the B cations located in a body centered position, and the X anions sitting in face centered positions, the p-type material being Ln 1-x Sr x Al 1-y Co y O 3+/−z , x being between 0 and 1, y being between 0 and 1, and z<1; and an n-type material formed from LnAlO 3 doped with manganese and niobium and having a perovskite structure with a general chemical composition of ABX 3 , A and B being cations Ln and Al 1-x-y Mn y Nb x , X being an anion O 3+/−z that bonds to both A and B, the A cations located in corners of the perovskite structure, the B cations located in a body centered position, and the X anions sitting in face centered positions, the n-type material being LnAl 1-x-y Mn y Nb x O 3+/−z , x being between 0 and 0.2, y being between 0 and 1, and z<1.

Assignees

• Skyworks Solutions Inc

Inventors

• Hill Michael David

Classifications

• H10N10/01

  Manufacture or treatment · CPC title

• C01G51/68

  containing rare earths, e.g. (La0.3Sr0.7)CoO3 · CPC title

• C01P2002/34

  perovskite-type (ABO3) · CPC title

• C01P2006/40

  Electric properties · CPC title

• C01G45/1264

  containing rare earths, e.g. (La1-xCax)MnO3 or LaMnO3 · CPC title