The thermoelectric properties of CoSb3 compound doped with Te and Sn synthesized at different pressure

Author:

Jiang Yiping1ORCID,Jia Xiaopeng2,Ma Hongan2

Affiliation:

1. Department of Physics, Beihua University, Jilin 132013, China

2. National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China

Abstract

The skutterudite CoSb[Formula: see text]Te[Formula: see text]Sn[Formula: see text] compound was synthesized successfully by high pressure and high temperature (HPHT) method using Co, Sb, Te and Sn powder as raw materials. The effects of pressure on its structure and the thermoelectric properties are investigated systematically from 300 K to 800 K. The electrical resistivity and the absolute value of the Seebeck coefficient for the sample increases with rising synthetic pressure. The thermal conductivity of the sample decreases with synthetic pressure and temperature rising in the range of 300–800 K. In this study, the maximum dimensionless figure of merit (ZT) value of 1.17 has been achieved at 793 K, 3 GPa for this thermoelectric material.

Funder

Natural Sciences Foundation of Education Department of Jilin Province

Natural Foundation of Municipal Science and Technology Bureau of Jilin City

Doctoral Research Foundation of Beihua University

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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