Reduction in thermal conductivity and electrical resistivity in Cu2SnSe3/Cu2Se composite thermoelectric system

Riya Thomas, Ashok Rao, Ruchi Bhardwaj, Ling Yu Wang, Yung Kang Kuo

Research output: Contribution to journalArticle

Abstract

A series of p-type Cu2SnSe3/xCu2Se (x = 0, 5, 10, 15, and 20 wt. %) composites were fabricated by spark plasma sintering, and the thermoelectric properties have been investigated in the temperature range 10–400 K. The crystal structure was evaluated by employing XRD analysis. Rietveld refinement was used to compute the amount of monoclinic and cubic phases in the composites, and the results revealed a decrease in the monoclinic phase with the increase in x wt. %. The measured thermoelectric properties of pristine as well as composites indicated that the introduction of Cu2Se leads to a simultaneous enhancement in electrical conductivity and reduction in thermal conductivity in Cu2SnSe3.

Original languageEnglish
Article number110607
JournalMaterials Research Bulletin
Volume120
DOIs
Publication statusPublished - 01-12-2019

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Thermal conductivity
thermal conductivity
electrical resistivity
composite materials
Composite materials
Rietveld refinement
Spark plasma sintering
sparks
sintering
Crystal structure
crystal structure
augmentation
Temperature
temperature
Electric Conductivity

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "Reduction in thermal conductivity and electrical resistivity in Cu2SnSe3/Cu2Se composite thermoelectric system",
abstract = "A series of p-type Cu2SnSe3/xCu2Se (x = 0, 5, 10, 15, and 20 wt. {\%}) composites were fabricated by spark plasma sintering, and the thermoelectric properties have been investigated in the temperature range 10–400 K. The crystal structure was evaluated by employing XRD analysis. Rietveld refinement was used to compute the amount of monoclinic and cubic phases in the composites, and the results revealed a decrease in the monoclinic phase with the increase in x wt. {\%}. The measured thermoelectric properties of pristine as well as composites indicated that the introduction of Cu2Se leads to a simultaneous enhancement in electrical conductivity and reduction in thermal conductivity in Cu2SnSe3.",
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Reduction in thermal conductivity and electrical resistivity in Cu2SnSe3/Cu2Se composite thermoelectric system. / Thomas, Riya; Rao, Ashok; Bhardwaj, Ruchi; Wang, Ling Yu; Kuo, Yung Kang.

In: Materials Research Bulletin, Vol. 120, 110607, 01.12.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Reduction in thermal conductivity and electrical resistivity in Cu2SnSe3/Cu2Se composite thermoelectric system

AU - Thomas, Riya

AU - Rao, Ashok

AU - Bhardwaj, Ruchi

AU - Wang, Ling Yu

AU - Kuo, Yung Kang

PY - 2019/12/1

Y1 - 2019/12/1

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AB - A series of p-type Cu2SnSe3/xCu2Se (x = 0, 5, 10, 15, and 20 wt. %) composites were fabricated by spark plasma sintering, and the thermoelectric properties have been investigated in the temperature range 10–400 K. The crystal structure was evaluated by employing XRD analysis. Rietveld refinement was used to compute the amount of monoclinic and cubic phases in the composites, and the results revealed a decrease in the monoclinic phase with the increase in x wt. %. The measured thermoelectric properties of pristine as well as composites indicated that the introduction of Cu2Se leads to a simultaneous enhancement in electrical conductivity and reduction in thermal conductivity in Cu2SnSe3.

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