Abstract
Gd 2O 3 : Eu and (Gd,Y) 2O 3 : Eu nanocrystals were prepared by the glycine assist combustion method. The as-prepared products are porous networks from the HTEM and isolated nanoparticles can be observed after further annealing. From the luminescence spectra and XRD patterns, the prepared Gd 2O 3 : Eu nanocrystals were found to be monoclinic. While Y 3+ doped into the Gd 2O 3 to form the complex host, the structure changed from monoclinic to cubic when Y 3+/Gd 3+ is 0.3. More interesting, the luminescent intensity of the (Gd,Y) 2O 3 : Eu nanocrystals is higher than that of pure Y 2O 3 : Eu or Gd 2O 3 : Eu system. Besides XRD pattern, the luminescence spectra, another powerful evidence in deducing the crystal structure, are used for analysis.
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