Silver-based intermetallic heterostructures in Sb 2Te 3 thick films with enhanced thermoelectric power factors

Yichi Zhang, Matthew L. Snedaker, Christina S. Birkel, Syed Mubeen, Xiulei Ji, Yifeng Shi, Deyu Liu, Xiaonao Liu, Martin Moskovits, Galen D. Stucky

Research output: Contribution to journalArticle

75 Scopus citations

Abstract

In this work, Ag xTe y-Sb 2Te 3 heterostructured films are prepared by ligand exchange using hydrazine soluble metal chalcogenide. Because of the created interfacial barrier, cold carriers are more strongly scattered than hot ones and thereby an over 50% enhanced thermoelectric power factor (∼2 μW/(cm·K 2)) is obtained at 150 °C. This shows the possibility of engineering multiphases to further improve thermoelectric performance beyond phonon scattering through a low-temperature solution processed route.

Original languageEnglish (US)
Pages (from-to)1075-1080
Number of pages6
JournalNano Letters
Volume12
Issue number2
DOIs
StatePublished - Feb 8 2012
Externally publishedYes

Keywords

  • Thermoelectric
  • antimony telluride
  • heterostructure
  • hot carrier filtering effect
  • ligand exchange
  • solution processed

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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  • Cite this

    Zhang, Y., Snedaker, M. L., Birkel, C. S., Mubeen, S., Ji, X., Shi, Y., Liu, D., Liu, X., Moskovits, M., & Stucky, G. D. (2012). Silver-based intermetallic heterostructures in Sb 2Te 3 thick films with enhanced thermoelectric power factors. Nano Letters, 12(2), 1075-1080. https://doi.org/10.1021/nl204346g