Abstract
The Y-Eu oxalate precursor was prepared with a homogeneous precipitation method. And the additives, Na 2CO 3, S, NaCl or their combination, were introduced into the precursor to prepare Y 2O 3:Eu 3+ red phosphors at 1000 ~ 1300 °C for 2 h. The effect of molten salts on particle size and luminescent intensity was studied. The experimental results showed that the complex molten salt (Na 2CO 3 + S + NaCl) was conductive to enhance the luminescent intensity of Y 2O 3:Eu 3+. The emission intensity of the phosphor prepared with these additives at 1300 °C was about 45% higher than that of the one prepared without molten salt, and about 11% higher than that of the corresponding commercial phosphor. Meanwhile, the particle size of Y 2O 3:Eu 3+ phosphor was controlled effectively with the molten salt.
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