Rubbing effect on surface morphology and thermoelectric properties of TTF-TCNQ thin films

E. Tamayo, K. Hayashi, T. Shinano, Y. Miyazaki, T. Kajitani

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Thin films of tetrathiofulvalene-tetracyanoquinodimethane (TTF-TCNQ), a typical organic material of charge transfer salts, were prepared on glass substrates by evaporation using TTF-TCNQ powder. The rubbing effect on the surface morphology and thermoelectric properties was studied. TTF-TCNQ films exhibited a bush-like disordered growth on the as-received glass substrate, whereas those on the rubbed glass substrate had extremely flat surfaces tiled with small rectangular TTF-TCNQ single crystals. Due to the ordered alignment of TTF-TCNQ tiles, improvement in the electrical conductivity and enhancement of the Seebeck coefficient were achieved.

Original languageEnglish
Pages (from-to)4554-4558
Number of pages5
JournalApplied Surface Science
Volume256
Issue number14
DOIs
Publication statusPublished - 2010 May 1

Keywords

  • Organic thin film
  • Rubbing technique
  • TTF-TCNQ
  • Thermoelectric conversion

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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