Optical and fluorescent properties of Y2O3 sol-gel planar waveguides containing Tb3+ doped nanocrystals

Yu-chun Wu, C. Garapon, R. Bazzi, A. Pillonnet, O. Tillement, J. Mugnier

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20 Citations (Scopus)

Abstract

Terbium doped Y2O3 planar waveguides were fabricated by sol-gel process and dip-coating using yttrium acetate as precursor. Two different doping modes were compared, i.e. introduction in the sol of dispersed Tb3+ions from dissolved Tb(NO3)3, or of nanoparticles of Tb2O3 or [Y2O3:50% Tb] from an alcoholic suspension. The chemical and nanostructural properties were analyzed by infrared spectroscopy, transmission electron microscopy and X-ray diffraction. The Tb3+ fluorescence properties were studied as a function of temperature and atmosphere of the thermal treatments, and of the Tb3+ concentration. The fluorescence properties are discussed in relation to the quenching mechanisms induced by Tb4+ transformation, residual OH groups, and crystallites size and structure. Optical propagation losses of the Tb doped Y2O3 planar waveguides related to the doping modes and Tb3+ concentration are presented. Doping sol-gel films by nanoparticles is shown to be a valuable alternative to the conventional doping from dissolved terbium salt.

Original languageEnglish
Pages (from-to)697-704
Number of pages8
JournalApplied Physics A: Materials Science and Processing
Volume87
Issue number4
DOIs
Publication statusPublished - 2007 Jun 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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