Porous Silicon and Thermoelectrics

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

Abstract

The motivation for, and performance of, silicon nanostructures including porous silicon in thermoelectrics is reviewed. A high thermoelectric figure of merit ZT ~1 has been achieved with a single silicon nanowire and ZT ~0.5 for a porous nanowire array. Very high Seebeck coefficients (3.2 mVK−1) have been achieved in compressed nanoparticles. Data is also presented relevant to two key factors limiting performance in bulk powders. The original size of silicon particles has a significant effect on the thermal conductivities of densified pellets. The intrinsic low electric conductivity can be improved by doping either nanocrystals or surface conductive ligands.
Original languageEnglish
Title of host publicationHandbook of Porous Silicon
EditorsLeigh Canham
PublisherSpringer
ISBN (Electronic)978-3-319-04508-5
ISBN (Print)978-3-319-04508-5
DOIs
Publication statusPublished - 24 Dec 2016

Keywords

  • Porous silicon
  • Nanowire
  • Nanostructure
  • Thermoelectrics
  • Seebeck coefficient

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