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Open Access Publications from the University of California

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

  • Author(s): Zhang, Y
  • Bahk, JH
  • Lee, J
  • Birkel, CS
  • Snedaker, ML
  • Liu, D
  • Zeng, H
  • Moskovits, M
  • Shakouri, A
  • Stucky, GD
  • et al.

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. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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