The synthesis of CaZn2Sb2 and its thermoelectric properties

Daniel P Stark, G. J. Snyder

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

CaZn2Sb2 was prepared and examined for use as a high temperature thermoelectric material. It has a high Seebeck coefficient and high electrical conductivity-comparable to β- Zn4Sb3.[1] These two properties are vital in determining the ability of the compound to change heat into electricity isentropically. The dimensionless figure of merit, ZT, a measure of the thermoelectric material's efficiency is defined as ZT = S2σT/λ where S is the Seebeck coefficient, Z the figure of merit, T the temperature, σ the electrical conductivity, and λ the thermal conductivity. However, due to its simple structure, CaZn2Sb2has high λ Doping CaZn2Sb2 with Ga3+ or modifying the (Ca, Zn) to Sb ratio was also investigated. Samples were prepared from Zn, Sb, and the binary compound CaSb2. They were tested for material composition, structure, and thermoelectric properties. Results of this experiment are presented and discussed as are the applicability of these materials to future thermoelectric use. Conservative estimates show a ZT of 5 at 500°C; CaZn2Sb2 could be a good thermoelectric to use at temperatures above 400°C.

Original languageEnglish (US)
Title of host publicationInternational Conference on Thermoelectrics, ICT, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages181-184
Number of pages4
Volume2002-January
ISBN (Print)0780376838
DOIs
StatePublished - 2002
Externally publishedYes
Event21st International Conference on Thermoelectrics, ICT 2002 - Long Beach, United States
Duration: Aug 25 2002Aug 29 2002

Other

Other21st International Conference on Thermoelectrics, ICT 2002
CountryUnited States
CityLong Beach
Period8/25/028/29/02

Fingerprint

thermoelectric materials
Seebeck effect
figure of merit
Seebeck coefficient
synthesis
electrical resistivity
electricity
thermal conductivity
Temperature
heat
Thermal conductivity
temperature
Electricity
Doping (additives)
estimates
Chemical analysis
Experiments
Electric Conductivity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Stark, D. P., & Snyder, G. J. (2002). The synthesis of CaZn2Sb2 and its thermoelectric properties. In International Conference on Thermoelectrics, ICT, Proceedings (Vol. 2002-January, pp. 181-184). [1190295] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICT.2002.1190295

The synthesis of CaZn2Sb2 and its thermoelectric properties. / Stark, Daniel P; Snyder, G. J.

International Conference on Thermoelectrics, ICT, Proceedings. Vol. 2002-January Institute of Electrical and Electronics Engineers Inc., 2002. p. 181-184 1190295.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Stark, DP & Snyder, GJ 2002, The synthesis of CaZn2Sb2 and its thermoelectric properties. in International Conference on Thermoelectrics, ICT, Proceedings. vol. 2002-January, 1190295, Institute of Electrical and Electronics Engineers Inc., pp. 181-184, 21st International Conference on Thermoelectrics, ICT 2002, Long Beach, United States, 8/25/02. https://doi.org/10.1109/ICT.2002.1190295
Stark DP, Snyder GJ. The synthesis of CaZn2Sb2 and its thermoelectric properties. In International Conference on Thermoelectrics, ICT, Proceedings. Vol. 2002-January. Institute of Electrical and Electronics Engineers Inc. 2002. p. 181-184. 1190295 https://doi.org/10.1109/ICT.2002.1190295
Stark, Daniel P ; Snyder, G. J. / The synthesis of CaZn2Sb2 and its thermoelectric properties. International Conference on Thermoelectrics, ICT, Proceedings. Vol. 2002-January Institute of Electrical and Electronics Engineers Inc., 2002. pp. 181-184
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