Improved Thermoelectric Performance in Flexible Tellurium Nanowires/Reduced Graphene Oxide Sandwich Structure Hybrid Films

Jie Gao, Chengyan Liu, Lei Miao, Xiaoyang Wang, Ying Peng, Yu Chen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

With a high flexibility and an adjustable electronic structure, reduced graphene oxide (RGO) is a potential candidate for flexible thermoelectric materials. Here, we report that flexible RGO/tellurium nanowires (Te NWs)/RGO sandwich structure hybrid films are prepared on glass fabrics through the drop-cast method. The addition of 20 wt.% Te NWs into a RGO matrix remarkably improves the Seebeck coefficient from 15.2 μV/K to 89.7 μV/K while maintaining relatively high electrical conductivity, thus resulting in a one order of magnitude higher power factor value compared with the Te NWs. According to the values of carrier mobility and concentration of hybrid films, the improved thermoelectric properties are presented because of the energy filtering effect on the interfaces in hybrid films. This article suggests that RGO/Te NWs/RGO hybrid films would be promising for fabricating flexible energy sources.

Original languageEnglish
Pages (from-to)3049-3056
Number of pages8
JournalJournal of Electronic Materials
Volume46
Issue number5
DOIs
Publication statusPublished - 2017 May 1
Externally publishedYes

Keywords

  • flexible hybrid film
  • Reduced graphene oxide
  • tellurium nanowires
  • thermoelectric

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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