Raman Studies of Semiconducting Oxide Nanobelts

K. Mcguire, Z. W. Pan, Z. L. Wang, D. Milkie, Jose Menendez, A. M. Rao

Research output: Contribution to journalArticle

72 Scopus citations

Abstract

Crystalline nanobelts of ZnO and SnO2 were prepared from a thermal evaporation of oxide powders inside an alumina tube in the absence of catalysts. Typical dimensions of the nanobelt samples ranged from ∼ 10 to 100 μm in length, 30 to 300 nm in width, and 6 to 30 nm in thickness. Room temperature Raman spectra were obtained on pressed mats of nanobelt samples and compared with the corresponding spectra of the starting oxide powders and bulk materials. Collectively, our Raman data indicated that the as-prepared nanobelt samples used in this study were oxygen deficient. Upon annealing at 900 °C in flowing oxygen for 1 h, the nanobelt samples exhibited Raman features that corresponded to those expected in respective bulk semiconducting oxides. The dimensions of the nanobelts were a bit too large to expect significant quantum size effects on the phonon structure similar to those observed in carbon nanotubes and short-period semiconductor superlattices.

Original languageEnglish (US)
Pages (from-to)499-502
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume2
Issue number5
DOIs
StatePublished - 2002

Keywords

  • Nanobelts
  • Raman spectroscopy
  • Zno

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Raman Studies of Semiconducting Oxide Nanobelts'. Together they form a unique fingerprint.

  • Cite this