Synthesis and transport properties of Cu-excess Cu(Zn,Cd)2InTe4 quaternary chalcogenides

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

doi:10.1016/j.jallcom.2018.02.030

Synthesis and transport properties of Cu-excess Cu(Zn,Cd)₂InTe₄ quaternary chalcogenides

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

Division of Medical Physics

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

12 Scopus citations

Abstract

Polycrystalline quaternary chalcogenides with compositions Cu_1.1Cd_1.8In_1.1Te₄, Cu_1.3Cd_1.9In_0.8Te₄, Cu_1.2Zn_1.8InTe₄ and Cu_1.2Zn_1.6In_1.2Te₄ were synthesized by reacting the constituent elements and subsequent solid state annealing followed by densification by hot-pressing in order to investigate the transport properties with varying compositions, and therefore carrier densities. The thermal conductivity of these compositions, as well as stoichiometric CuZn₂InTe₄ and CuCd₂InTe₄, are reported for the first time. In addition to the thermal conductivity, resistivity, Seebeck coefficient and compositional stability measurements are also discussed. These materials are p-type semiconductors with very low thermal conductivity values. The potential for improved thermoelectric performance is also discussed.

Original language	English
Pages (from-to)	543-546
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	743
DOIs	https://doi.org/10.1016/j.jallcom.2018.02.030
State	Published - Apr 30 2018

Keywords

Quaternary chalcogenides
Thermal conductivity
Thermoelectrics

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10.1016/j.jallcom.2018.02.030

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title = "Synthesis and transport properties of Cu-excess Cu(Zn,Cd)2InTe4 quaternary chalcogenides",

abstract = "Polycrystalline quaternary chalcogenides with compositions Cu1.1Cd1.8In1.1Te4, Cu1.3Cd1.9In0.8Te4, Cu1.2Zn1.8InTe4 and Cu1.2Zn1.6In1.2Te4 were synthesized by reacting the constituent elements and subsequent solid state annealing followed by densification by hot-pressing in order to investigate the transport properties with varying compositions, and therefore carrier densities. The thermal conductivity of these compositions, as well as stoichiometric CuZn2InTe4 and CuCd2InTe4, are reported for the first time. In addition to the thermal conductivity, resistivity, Seebeck coefficient and compositional stability measurements are also discussed. These materials are p-type semiconductors with very low thermal conductivity values. The potential for improved thermoelectric performance is also discussed.",

keywords = "Quaternary chalcogenides, Thermal conductivity, Thermoelectrics",

author = "Dean Hobbis and Kaya Wei and Hsin Wang and Nolas, {George S.}",

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doi = "10.1016/j.jallcom.2018.02.030",

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T1 - Synthesis and transport properties of Cu-excess Cu(Zn,Cd)2InTe4 quaternary chalcogenides

AU - Hobbis, Dean

AU - Wei, Kaya

AU - Wang, Hsin

AU - Nolas, George S.

PY - 2018/4/30

Y1 - 2018/4/30

N2 - Polycrystalline quaternary chalcogenides with compositions Cu1.1Cd1.8In1.1Te4, Cu1.3Cd1.9In0.8Te4, Cu1.2Zn1.8InTe4 and Cu1.2Zn1.6In1.2Te4 were synthesized by reacting the constituent elements and subsequent solid state annealing followed by densification by hot-pressing in order to investigate the transport properties with varying compositions, and therefore carrier densities. The thermal conductivity of these compositions, as well as stoichiometric CuZn2InTe4 and CuCd2InTe4, are reported for the first time. In addition to the thermal conductivity, resistivity, Seebeck coefficient and compositional stability measurements are also discussed. These materials are p-type semiconductors with very low thermal conductivity values. The potential for improved thermoelectric performance is also discussed.

AB - Polycrystalline quaternary chalcogenides with compositions Cu1.1Cd1.8In1.1Te4, Cu1.3Cd1.9In0.8Te4, Cu1.2Zn1.8InTe4 and Cu1.2Zn1.6In1.2Te4 were synthesized by reacting the constituent elements and subsequent solid state annealing followed by densification by hot-pressing in order to investigate the transport properties with varying compositions, and therefore carrier densities. The thermal conductivity of these compositions, as well as stoichiometric CuZn2InTe4 and CuCd2InTe4, are reported for the first time. In addition to the thermal conductivity, resistivity, Seebeck coefficient and compositional stability measurements are also discussed. These materials are p-type semiconductors with very low thermal conductivity values. The potential for improved thermoelectric performance is also discussed.

KW - Quaternary chalcogenides

KW - Thermal conductivity

KW - Thermoelectrics

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JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Synthesis and transport properties of Cu-excess Cu(Zn,Cd)₂InTe₄ quaternary chalcogenides

Abstract

Keywords

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