Abstract
In this work, the influence of Y3+ doping on the phase transformation and photoluminescence properties of Gd2O3∶Eu3+ red phosphor was studied. Red emission (Gd0·95−xYxEu0·05)2O3 phosphor particles have been processed via homogeneous precipitation precursor synthesis followed by calcination at 1300°C for 4 h. The resultant oxides could be modulated from a pure monoclinic phase to a pure cubic phase by Y3+ doping. The phosphor with a cubic structure shows a significantly stronger red emission, and a blue shift of the charge transfer band was observed on the excitation curve by Y3+ doping. These phenomena have been deciphered by considering the structural features of the products.
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