Synthesis, structure, electronic and thermal properties of sphalerite CuZn2InS4

Oluwagbemiga P. Ojo; Wilarachchige D.C.B. Gunatilleke; Hagen Poddig; Hsin Wang; Joshua Martin; Dylan J. Kirsch; George S. Nolas

doi:10.1039/d1dt03218f

Synthesis, structure, electronic and thermal properties of sphalerite CuZn₂InS₄

Oluwagbemiga P. Ojo, Wilarachchige D.C.B. Gunatilleke, Hagen Poddig, Hsin Wang, Joshua Martin, Dylan J. Kirsch, George S. Nolas

Nuclear Energy Materials Microanalysis

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8 Scopus citations

Abstract

Quaternary chalcogenides continue to be of interest due to the variety of physical properties they possess, as well as their potential for different applications of interest. Investigations on materials with the sphalerite crystal structure have only recently begun. In this study we have synthesized sulfur-based sphalerite quaternary chalcogenides, including off-stoichiometric compositions, and investigated the temperature-dependent electronic, thermal and structural properties of these materials. Insulating to semiconducting transport is observed with stoichiometric variation, and analyses of heat capacity and thermal expansion revealed lattice anharmonicity that contributes to the low thermal conductivity these materials possess. We include similar analyses for CuZn2InSe4 and compare these sphalerite quaternary chalcogenides to that of zinc blende binaries in order to fully understand the origin of the low thermal conductivity these quaternary chalcogenides possess.

Original language	English
Pages (from-to)	17611-17617
Number of pages	7
Journal	Dalton Transactions
Volume	50
Issue number	47
DOIs	https://doi.org/10.1039/d1dt03218f
State	Published - Dec 21 2021

Funding

This work was supported in part by the National Science Foundation, Grant No. DMR-1748188. O. P. O. and W. D. C. B. G acknowledges support from the II-VI Foundation Block-Gift Program. The authors thank N. Alzahrani at USF for synthesis of CuZn2InS4. H. W. acknowledges support of the U. S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office, Propulsion Materials Program. Oak Ridge National Laboratory is managed by UT-Battelle LLC under contract DE-AC05000OR22725.

Funders	Funder number
II-VI Foundation
National Science Foundation	DMR-1748188
U.S. Department of Energy
Office of Energy Efficiency and Renewable Energy
Oak Ridge National Laboratory
UT-Battelle	DE-AC05000OR22725

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abstract = "Quaternary chalcogenides continue to be of interest due to the variety of physical properties they possess, as well as their potential for different applications of interest. Investigations on materials with the sphalerite crystal structure have only recently begun. In this study we have synthesized sulfur-based sphalerite quaternary chalcogenides, including off-stoichiometric compositions, and investigated the temperature-dependent electronic, thermal and structural properties of these materials. Insulating to semiconducting transport is observed with stoichiometric variation, and analyses of heat capacity and thermal expansion revealed lattice anharmonicity that contributes to the low thermal conductivity these materials possess. We include similar analyses for CuZn2InSe4 and compare these sphalerite quaternary chalcogenides to that of zinc blende binaries in order to fully understand the origin of the low thermal conductivity these quaternary chalcogenides possess.",

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AU - Gunatilleke, Wilarachchige D.C.B.

AU - Poddig, Hagen

AU - Wang, Hsin

AU - Martin, Joshua

AU - Kirsch, Dylan J.

AU - Nolas, George S.

PY - 2021/12/21

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AB - Quaternary chalcogenides continue to be of interest due to the variety of physical properties they possess, as well as their potential for different applications of interest. Investigations on materials with the sphalerite crystal structure have only recently begun. In this study we have synthesized sulfur-based sphalerite quaternary chalcogenides, including off-stoichiometric compositions, and investigated the temperature-dependent electronic, thermal and structural properties of these materials. Insulating to semiconducting transport is observed with stoichiometric variation, and analyses of heat capacity and thermal expansion revealed lattice anharmonicity that contributes to the low thermal conductivity these materials possess. We include similar analyses for CuZn2InSe4 and compare these sphalerite quaternary chalcogenides to that of zinc blende binaries in order to fully understand the origin of the low thermal conductivity these quaternary chalcogenides possess.

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ER -

Synthesis, structure, electronic and thermal properties of sphalerite CuZn₂InS₄

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