Thermoelectric properties of individual single-crystalline PbTe nanowires grown by a vapor transport method

Seung Hyun Lee, Wooyoung Shim, So Young Jang, Jong Wook Roh, Philip Kim, Jeunghee Park, Wooyoung Lee

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

We report the thermoelectric performance of individual PbTe nanowires with sizes ranging from 76 to 436nm grown from a vapor transport method that synthesizes high-quality, single-crystalline PbTe nanowires. Independent measurements of temperature-dependent Seebeck coefficient (S), thermal conductivity (κ) and electrical conductivity (σ) of individual PbTe nanowires were investigated. By varying the nanowire size, the simultaneous increase and decrease of S (-130νVK- 1) and κ (1.2Wm - 1K- 1), respectively, are achieved at room temperature. Our results demonstrate the enhanced thermoelectric properties of individual single-crystalline PbTe nanowires, compared to that of bulk PbTe, and can provide guidelines for future work on nanostructured thermoelectrics based on PbTe.

Original languageEnglish
Article number295707
JournalNanotechnology
Volume22
Issue number29
DOIs
Publication statusPublished - 2011 Jul 22

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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