Alloying to increase the band gap for improving thermoelectric properties of Ag2Te

Yanzhong Pei, Nicholas A. Heinz, G. Jeffrey Snyder*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

85 Scopus citations

Abstract

Ag2Te simultaneously shows high mobility and low thermal conductivity, however the relatively low band gap of ∼0.2 eV prevents it from achieving high thermoelectric figure of merit, zT, in the high temperature phase. In this study, the band gap of Ag2Te has been increased enabling a zT of unity by forming alloys and composites with PbTe, thereby demonstrating the importance of exploiting potentially good thermoelectrics among these small band gap semiconductors and similar materials.

Original languageEnglish (US)
Pages (from-to)18256-18260
Number of pages5
JournalJournal of Materials Chemistry
Volume21
Issue number45
DOIs
StatePublished - Dec 7 2011

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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