Strategy to optimize the overall thermoelectric properties of SnTe via compositing with its property-counter CuInTe2

Zhou, Y. M.1; Wu, H. J.2,3,4; Pei, Y. L.1; Chang, C.1; Xiao, Y.1; Zhang, X.1; Gong, S. K.1; He, J. Q.2,3; Zhao, L. -D.1

2017-02-15

10.1016/j.actamat.2016.11.049

ACTA MATERIALIA   影响因子和分区

1359-6454

1873-2453

SnTe, a lead-free analogue of PbTe, exhibits inferior thermoelectric performance due to its intrinsically high carrier concentration, and thus too low Seebeck coefficient and high thermal conductivity. To optimize the overall properties of SnTe, we composited SnTe with the other compound with opposite performance. CuInTe2 is a good choice due to its low carrier concentration, high Seebeck coefficient and relatively low thermal conductivity. As a result, the most optimized properties can be obtained in CuSnmInTem+2 when m = 7, and an enhanced figure of merit ZTcan be obtained, similar to 1.0 at 873 K, which is a three-fold increase for pure CuInTe2 and one-fold increase for pure SnTe. The overall properties are optimized much greater than the expectation, which was estimated through Effective Medium Theory (EMT). Such deviation can be ascribed to the existence of high density of coherent nanostructures. (C) 2016 Published by Elsevier Ltd on behalf of Acta Materialia Inc.

Thermoelectric SnTe Composite Nanostructure

SCI ; EI

英语

其他

Guangdong Science and Technology Fund[2015A030308001]

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000394201500055

PERGAMON-ELSEVIER SCIENCE LTD

20170203228084

Carrier concentration ; Composite materials ; Copper compounds ; Indium compounds ; IV-VI semiconductors ; Nanostructures ; Seebeck coefficient ; Tellurium compounds ; Thermal conductivity ; Thermoelectricity

Thermodynamics:641.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Solid State Physics:933 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
2.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China
3.Shenzhen Key Lab Thermoelect Mat, Shenzhen 518055, Peoples R China
4.Natl Univ Singapore, Dept Mat Sci & Engn, 7 Engn Dr 1, Singapore 117575, Singapore

Zhou, Y. M.,Wu, H. J.,Pei, Y. L.,et al. Strategy to optimize the overall thermoelectric properties of SnTe via compositing with its property-counter CuInTe2[J]. ACTA MATERIALIA,2017,125:542-549.

Zhou, Y. M..,Wu, H. J..,Pei, Y. L..,Chang, C..,Xiao, Y..,...&Zhao, L. -D..(2017).Strategy to optimize the overall thermoelectric properties of SnTe via compositing with its property-counter CuInTe2.ACTA MATERIALIA,125,542-549.

Zhou, Y. M.,et al."Strategy to optimize the overall thermoelectric properties of SnTe via compositing with its property-counter CuInTe2".ACTA MATERIALIA 125(2017):542-549.