Growth, structural, Raman, and photoluminescence properties of rutile TiO2 nanowires synthesized by the simple thermal treatment

Hyoun Woo Kim, Hyo Sung Kim, Han Gil Na, Ju Chan Yang, Doo Young Kim

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

We have used the simple heating technique for growing TiO2 nanowires. We have changed the thickness of predeposited Au layers on TiAlN substrates, realizing that the thickness of the Au layer influenced the resultant morphology of nanowires. The nanowires were analyzed with X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, and photoluminescence spectroscopy (PL). The resultant nanowires consisted of the tetragonal rutile structure of TiO 2. With the nanowire morphology changing with varying the Au layer thickness, we suggest that the associated growth mechanism is a base-growth mode, in which Au played a catalytic role. PL spectra indicated that the TiO2 nanowires exhibited a broad emission band comprising four peaks centered at 3.0, 2.6, 2.3, and 1.5 eV.

Original languageEnglish
Pages (from-to)217-223
Number of pages7
JournalJournal of Alloys and Compounds
Volume504
Issue number1
DOIs
StatePublished - 2010 Aug 31

Keywords

  • Nanowires
  • Photoluminescence
  • Raman
  • Thermal treatment
  • TiO

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