Journal of Materials Science

, Volume 41, Issue 8, pp 2201–2209 | Cite as

Sol-gel elaboration and characterization of YAG: Tb3+ powdered phosphors

  • A. Potdevin
  • G. ChadeyronEmail author
  • D. Boyer
  • R. Mahiou


Pure and Tb3+-doped Y3Al5O12 materials have been successfully synthesized from sol-gel based alkoxide precursors. Their formation process, structure and microstructure were examined by means of X-ray diffraction (XRD), thermal analysis combined with infrared spectroscopy (TG-IR / TDA), infrared spectroscopy (IR), scanning electron microscopy (SEM) and solid-state NMR study (27Al MAS NMR). Pure highly crystalline YAG powders were obtained from 900°C. Laser induced luminescence spectra as well as decay times versus Tb3+ concentration were also studied. The well known 5D35D4 cross-relaxation and concentration quenching phenomena were observed. Decay times of the green emission (λem = 544 nm) were mainly found to be exponential with time constant lower than 5 ms. Finally, the optimal terbium concentration for the luminescence efficiency of YAG:Tb3+ powders was determined.


Thermal Analysis Infrared Spectroscopy Decay Time Alkoxide Luminescence Spectrum 


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Copyright information

© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  • A. Potdevin
    • 1
  • G. Chadeyron
    • 1
    Email author
  • D. Boyer
    • 1
  • R. Mahiou
    • 1
  1. 1.Laboratoire des Matériaux InorganiquesUniversité Blaise Pascal and ENSCCFAubière CedexFrance

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