Electric field effect on thermopower in cylindrical microwires

V. Kantser, Z. Dashevsky, H. Scherrer, D. Meglei, M. Dantu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The electric field effect (EFE) in a coaxial cylindrical capacitor configuration was used to study the modification of transport and thermoelectric properties of the semiconductors PbTe and Bi2Te3 as glass coated microwires. Theoretical analysis of microwire EFE was done on the basis of Poisson equation in cylindrical geometry with corresponding boundary conditions. The radial dependences of transport characteristics have been calculated for PbTe and Bi2Te3 wires at positive and negative polarity of the gate voltage under the assumption that the carrier mobility is similar with the bulk material mobility. Some aspects of microwire fabrication by different methods as well as some general wire characteristics are presented. The first results of experimental measurements of wire transport properties under EFE show the increasing or decreasing of the average Seebeck coefficient in dependence of gate potential polarity in accordance with the theoretical analysis.

Original languageEnglish
Title of host publicationProceedings ICT 2003 - 22nd International Conference on Thermoelectrics
PublisherInstitute of Electrical and Electronics Engineers
Pages350-354
Number of pages5
ISBN (Electronic)078038301X
DOIs
StatePublished - 1 Jan 2003
Event22nd International Conference on Thermoelectrics, ICT 2003 - La Grande Motte, France
Duration: 17 Aug 200321 Aug 2003

Publication series

NameInternational Conference on Thermoelectrics, ICT, Proceedings
Volume2003-January

Conference

Conference22nd International Conference on Thermoelectrics, ICT 2003
Country/TerritoryFrance
CityLa Grande Motte
Period17/08/0321/08/03

Keywords

  • Bismuth
  • Boundary conditions
  • Capacitors
  • Coaxial components
  • Geometry
  • Glass
  • Poisson equations
  • Tellurium
  • Thermoelectricity
  • Wire

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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