Optical properties of vanadium dioxide grown on sapphire substrate with dd7ferent oreentations

M. Nazari, Y. Zhao, Y. Zhu, V. V. Kuryatkov, Z. Y. Fan, A. A. Bernussi, M. Holtz

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

We report optical, structural, and electrical properties of VO2 on sapphire substrates with c-, m-and r- orientations with identical growth conditions. XRD data show that VO2 orientation depends on the substrate orientation. Based on temperature-dependent resistivity measurements, metal-insulator phase transition (MIT) temperature, TMIT, depends on the VO2 orientation due, primarily, to stress. The energy gap Eg is observed to gradually red shift as temperature increases before collapsing to Eg ≈ 0 eV at temperatures below TMIT.

Original languageEnglish (US)
Title of host publicationTMS 2013 142nd Annual Meeting and Exhibition, Annual Meeting
PublisherWiley-Blackwell
Pages933-940
Number of pages8
ISBN (Electronic)9781118663547
ISBN (Print)9781118605813
DOIs
StatePublished - Jan 1 2013
Externally publishedYes

Keywords

  • And refractive index
  • Energy gap
  • Metal-insulator phase transition (MIT)
  • Spectroscopic ellipsometry

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

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