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Abstract
Mesoporous europium-doped yttrium oxide phosphors were successfully synthesized by a simple Pechini sol–gel method. The prepared powders were characterized by X-ray diffraction, scanning electron microscopy, Surface area and pore size analyzer and fluorescence spectrophotometer. The XRD spectrum of the calcined samples confirm the presence of Y2O3. The surface area and pore size analyzer was employed to demonstrate the existence of mesoporous structure in these samples. The room temperature photoluminescence (PL) emissions of Y2O3:Eu samples can be observed under 245 nm excitation. PL results show that the emission intensity of as-prepared mesoporous Y2O3:Eu phosphors are higher than that of particles without special structures. Large surface area and pores play an important role in the increasing of PL intensity. The intensity ratio between 5D0 → 7F2 and 5D0 → 7F1 transitions which related to the local environment of Eu3+ were also studied.
Published Version
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