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    STUDIA CHEMIA - Issue no. 2 / 2006  
         
  Article:   SPECTRAL INVESTIGATIONS OF EUROPIUM ACTIVATED YTTRIUM OXIDE PHOSPHOR PREPARED BY COPRECIPITATION METHOD WITH OXALIC ACID.

Authors:  LAURA MUREŞAN, ELISABETH-JEANNE POPOVICI, AMALIA MESAROS, MARIA ŞTEFAN, RODICA GRECU , EMIL INDREA.
 
       
         
  Abstract:  Europium activated yttrium oxide phosphors were prepared by reagent simultaneous addition technique, using oxalic acid as precipitating reagent. The aim of the paper was to study the influence of the firing conditions on luminescent and morpho-structural properties of Y2O3:Eu phosphors. Thermal analysis, X-ray diffraction, SEM, FTIR and fluorescence spectroscopy were used to investigate precursor and phosphor powders. The correlation between the phosphor properties and precursor quality enabled us to select the optimal synthesis conditions.  
         
     
         
         
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