Synthesis, Structure, Te Alloying, and Physical Properties of CuSbS2

Dean Hobbis; Kaya Wei; Hsin Wang; Joshua Martin; George S. Nolas

doi:10.1021/acs.inorgchem.7b02154

Synthesis, Structure, Te Alloying, and Physical Properties of CuSbS₂

Dean Hobbis, Kaya Wei, Hsin Wang, Joshua Martin, George S. Nolas

Nuclear Energy Materials Microanalysis

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Abstract

Materials with very low thermal conductivities continue to be of interest for a variety of applications. We synthesized CuSbS₂ employing a mechanical alloying technique in order to investigate its physical properties. The trigonal pyramid arrangement of the S atoms around the Sb atoms allows for lone-pair electron formation that results in very low thermal conductivity. In addition to thermal properties, the structural, electrical, and optical properties, as well as compositional stability measurements, are also discussed. CuSbS_1.8Te_0.2 was similarly synthesized and characterized in order to compare its structural and transport properties with that of CuSbS₂, in addition to investigating the effect of Te alloying on these properties.

Original language	English
Pages (from-to)	14040-14044
Number of pages	5
Journal	Inorganic Chemistry
Volume	56
Issue number	22
DOIs	https://doi.org/10.1021/acs.inorgchem.7b02154
State	Published - Nov 20 2017

Funding

This work was supported, in part, by the National Science Foundation Grant No. DMR-1400957. D.H. and K.W. also acknowledge support from the II-VI Foundation Block-Gift Program. H.W. would like to acknowledge the support of the assistant secretary for Energy Efficiency and Renewable Energy of the Department of Energy and the Propulsion Materials program under the Vehicle Technologies program. Oak Ridge National Laboratory is managed by UT-Battelle LLC under contract DE-AC05000OR22725. The authors thank Dr. Jeff Sharp of Marlow Industries for air stability testing.

Funders	Funder number
II-VI Foundation
UT-Battelle LLC	DE-AC05000OR22725
National Science Foundation	1400957
U.S. Department of Energy
Oak Ridge National Laboratory

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abstract = "Materials with very low thermal conductivities continue to be of interest for a variety of applications. We synthesized CuSbS2 employing a mechanical alloying technique in order to investigate its physical properties. The trigonal pyramid arrangement of the S atoms around the Sb atoms allows for lone-pair electron formation that results in very low thermal conductivity. In addition to thermal properties, the structural, electrical, and optical properties, as well as compositional stability measurements, are also discussed. CuSbS1.8Te0.2 was similarly synthesized and characterized in order to compare its structural and transport properties with that of CuSbS2, in addition to investigating the effect of Te alloying on these properties.",

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AU - Nolas, George S.

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AB - Materials with very low thermal conductivities continue to be of interest for a variety of applications. We synthesized CuSbS2 employing a mechanical alloying technique in order to investigate its physical properties. The trigonal pyramid arrangement of the S atoms around the Sb atoms allows for lone-pair electron formation that results in very low thermal conductivity. In addition to thermal properties, the structural, electrical, and optical properties, as well as compositional stability measurements, are also discussed. CuSbS1.8Te0.2 was similarly synthesized and characterized in order to compare its structural and transport properties with that of CuSbS2, in addition to investigating the effect of Te alloying on these properties.

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Synthesis, Structure, Te Alloying, and Physical Properties of CuSbS₂

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