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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 22 — Aug. 1, 2012
  • pp: 5438–5441

Raman spectral analysis of TiO2 thin films doped with rare-earth samarium

Chang-Hu Yang and Zhong-Quan Ma  »View Author Affiliations


Applied Optics, Vol. 51, Issue 22, pp. 5438-5441 (2012)
http://dx.doi.org/10.1364/AO.51.005438


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Abstract

TiO2 thin films doped with rare-earth samarium were prepared on a quartz plate by the sol-gel/spin-coating technique. The samples were annealed at 700 °C to 1100 °C, and the Raman spectra of the samples were obtained. Analyses of Raman spectra show that samarium doping can inhibit the anatase–rutile phase transition. Samarium doping can refine grains of TiO2 thin films and increase the internal stress, thereby preventing lattice vibration. Nanocrystalline TiO2 thin films obviously show the phonon confinement effect, i.e., the blueshift of characteristic Raman peak and full width at half-height increase, and the peak shapes asymmetrically broaden with a decrease in the grain sizes of the samples.

© 2012 Optical Society of America

OCIS Codes
(160.5690) Materials : Rare-earth-doped materials
(300.6450) Spectroscopy : Spectroscopy, Raman
(310.6870) Thin films : Thin films, other properties

ToC Category:
Spectroscopy

History
Original Manuscript: July 19, 2011
Revised Manuscript: December 21, 2011
Manuscript Accepted: July 5, 2012
Published: July 27, 2012

Citation
Chang-Hu Yang and Zhong-Quan Ma, "Raman spectral analysis of TiO2 thin films doped with rare-earth samarium," Appl. Opt. 51, 5438-5441 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-22-5438

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