Hot carrier filtering in solution processed heterostructures: A paradigm for improving thermoelectric efficiency

Yichi Zhang, Je Hyeong Bahk, Joun Lee, Christina S. Birkel, Matthew L. Snedaker, Deyu Liu, Hongmei Zeng, Martin Moskovits, Ali Shakouri, Galen D. Stucky

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

An approach based on a solution-based synthesis that produces a thermally stable Ag/oxide/Sb2Te3-Te metal-semiconductor heterostructure is described. With this approach, a figure of merit of zT = 1.0 at 460 K is achieved, a record for a heterostructured material made using wet chemistry. Combining experiments and theory shows that the large increase in the material's Seebeck coefficient results from hot carrier filtering.

Original languageEnglish (US)
Pages (from-to)2755-2761
Number of pages7
JournalAdvanced Materials
Volume26
Issue number17
DOIs
StatePublished - May 7 2014

Keywords

  • atomic layer deposition (ALD)
  • hetero-structure
  • hot carrier filtering effect
  • molecular metal chalcogenide
  • solution processed
  • thermoelectric

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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    Zhang, Y., Bahk, J. H., Lee, J., Birkel, C. S., Snedaker, M. L., Liu, D., Zeng, H., Moskovits, M., Shakouri, A., & Stucky, G. D. (2014). Hot carrier filtering in solution processed heterostructures: A paradigm for improving thermoelectric efficiency. Advanced Materials, 26(17), 2755-2761. https://doi.org/10.1002/adma.201304419