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Title: Thermoelectric and mechanical properties of spark plasma sintered Cu{sub 3}SbSe{sub 3} and Cu{sub 3}SbSe{sub 4}: Promising thermoelectric materials

Abstract

We report the synthesis of thermoelectric compounds, Cu{sub 3}SbSe{sub 3} and Cu{sub 3}SbSe{sub 4}, employing the conventional fusion method followed by spark plasma sintering. Their thermoelectric properties indicated that despite its higher thermal conductivity, Cu{sub 3}SbSe{sub 4} exhibited a much larger value of thermoelectric figure-of-merit as compared to Cu{sub 3}SbSe{sub 3}, which is primarily due to its higher electrical conductivity. The thermoelectric compatibility factor of Cu{sub 3}SbSe{sub 4} was found to be ∼1.2 as compared to 0.2 V{sup −1} for Cu{sub 3}SbSe{sub 3} at 550 K. The results of the mechanical properties of these two compounds indicated that their microhardness and fracture toughness values were far superior to the other competing state-of-the-art thermoelectric materials.

Authors:
; ; ; ; ; ;  [1]
  1. CSIR-Network of Institutes for Solar Energy, Materials Physics and Engineering, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Road, New Delhi 110012 (India)
Publication Date:
OSTI Identifier:
22395606
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 26; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIMONIDES; COMPARATIVE EVALUATIONS; COMPATIBILITY; COPPER SELENIDES; ELECTRIC CONDUCTIVITY; FRACTURE PROPERTIES; MICROHARDNESS; PERFORMANCE; PLASMA; SINTERING; SYNTHESIS; THERMAL CONDUCTIVITY; THERMOELECTRIC MATERIALS; THERMOELECTRIC PROPERTIES

Citation Formats

Tyagi, Kriti, Gahtori, Bhasker, Bathula, Sivaiah, Toutam, Vijaykumar, Sharma, Sakshi, Singh, Niraj Kumar, and Dhar, Ajay, E-mail: adhar@nplindia.org. Thermoelectric and mechanical properties of spark plasma sintered Cu{sub 3}SbSe{sub 3} and Cu{sub 3}SbSe{sub 4}: Promising thermoelectric materials. United States: N. p., 2014. Web. doi:10.1063/1.4904996.
Tyagi, Kriti, Gahtori, Bhasker, Bathula, Sivaiah, Toutam, Vijaykumar, Sharma, Sakshi, Singh, Niraj Kumar, & Dhar, Ajay, E-mail: adhar@nplindia.org. Thermoelectric and mechanical properties of spark plasma sintered Cu{sub 3}SbSe{sub 3} and Cu{sub 3}SbSe{sub 4}: Promising thermoelectric materials. United States. doi:10.1063/1.4904996.
Tyagi, Kriti, Gahtori, Bhasker, Bathula, Sivaiah, Toutam, Vijaykumar, Sharma, Sakshi, Singh, Niraj Kumar, and Dhar, Ajay, E-mail: adhar@nplindia.org. Mon . "Thermoelectric and mechanical properties of spark plasma sintered Cu{sub 3}SbSe{sub 3} and Cu{sub 3}SbSe{sub 4}: Promising thermoelectric materials". United States. doi:10.1063/1.4904996.
@article{osti_22395606,
title = {Thermoelectric and mechanical properties of spark plasma sintered Cu{sub 3}SbSe{sub 3} and Cu{sub 3}SbSe{sub 4}: Promising thermoelectric materials},
author = {Tyagi, Kriti and Gahtori, Bhasker and Bathula, Sivaiah and Toutam, Vijaykumar and Sharma, Sakshi and Singh, Niraj Kumar and Dhar, Ajay, E-mail: adhar@nplindia.org},
abstractNote = {We report the synthesis of thermoelectric compounds, Cu{sub 3}SbSe{sub 3} and Cu{sub 3}SbSe{sub 4}, employing the conventional fusion method followed by spark plasma sintering. Their thermoelectric properties indicated that despite its higher thermal conductivity, Cu{sub 3}SbSe{sub 4} exhibited a much larger value of thermoelectric figure-of-merit as compared to Cu{sub 3}SbSe{sub 3}, which is primarily due to its higher electrical conductivity. The thermoelectric compatibility factor of Cu{sub 3}SbSe{sub 4} was found to be ∼1.2 as compared to 0.2 V{sup −1} for Cu{sub 3}SbSe{sub 3} at 550 K. The results of the mechanical properties of these two compounds indicated that their microhardness and fracture toughness values were far superior to the other competing state-of-the-art thermoelectric materials.},
doi = {10.1063/1.4904996},
journal = {Applied Physics Letters},
number = 26,
volume = 105,
place = {United States},
year = {Mon Dec 29 00:00:00 EST 2014},
month = {Mon Dec 29 00:00:00 EST 2014}
}