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

Y. M. Zhou; H. J. Wu; Y. L. Pei; C. Chang; Y. Xiao; X. Zhang; S. K. Gong; J. Q. He; L. D. Zhao

doi:10.1016/j.actamat.2016.11.049

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

Y. M. Zhou
, H. J. Wu
, Y. L. Pei
, C. Chang
, Y. Xiao
, X. Zhang
, S. K. Gong
, J. Q. He
, L. D. Zhao

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

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 CuSn_mInTe_m+2 when m = 7, and an enhanced figure of merit ZT can be obtained, ∼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.

Original language	English
Pages (from-to)	542-549
Number of pages	8
Journal	Acta Materialia
Volume	125
DOIs	https://doi.org/10.1016/j.actamat.2016.11.049
State	Published - 15 Feb 2017
Externally published	Yes

Keywords

Composite
Nanostructure
SnTe
Thermoelectric

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10.1016/j.actamat.2016.11.049

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@article{4afbbfffc39b4432922861c2abc14ec8,

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

abstract = "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 ZT can be obtained, ∼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.",

keywords = "Composite, Nanostructure, SnTe, Thermoelectric",

author = "Zhou, \{Y. M.\} and Wu, \{H. J.\} and Pei, \{Y. L.\} and C. Chang and Y. Xiao and X. Zhang and Gong, \{S. K.\} and He, \{J. Q.\} and Zhao, \{L. D.\}",

note = "Publisher Copyright: {\textcopyright} 2016",

year = "2017",

month = feb,

day = "15",

doi = "10.1016/j.actamat.2016.11.049",

language = "英语",

volume = "125",

pages = "542--549",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Acta Materialia Inc",

}

TY - JOUR

T1 - Strategy to optimize the overall thermoelectric properties of SnTe via compositing with its property-counter CuInTe2

AU - Zhou, Y. M.

AU - Wu, H. J.

AU - Pei, Y. L.

AU - Chang, C.

AU - Xiao, Y.

AU - Zhang, X.

AU - Gong, S. K.

AU - He, J. Q.

AU - Zhao, L. D.

PY - 2017/2/15

Y1 - 2017/2/15

N2 - 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 ZT can be obtained, ∼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.

AB - 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 ZT can be obtained, ∼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.

KW - Composite

KW - Nanostructure

KW - SnTe

KW - Thermoelectric

UR - https://www.scopus.com/pages/publications/85008343537

U2 - 10.1016/j.actamat.2016.11.049

DO - 10.1016/j.actamat.2016.11.049

M3 - 文章

AN - SCOPUS:85008343537

SN - 1359-6454

VL - 125

SP - 542

EP - 549

JO - Acta Materialia

JF - Acta Materialia

ER -

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

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Keywords

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