Abstract
Rare-earth doped phosphors with tunable optical properties have potential applications in solid state lighting, such as display panels and fluorescent lamps. Herein, trivalent Eu3+, Tb3+ activated Y2O3 phosphors were synthesized by a solid state process. The phase structure was analyzed by X-ray diffraction. The results show the pure phase of Y2O3 is obtained and RE ions do not exhibit any effect on the structural properties. Single RE ions activated Y2O3 phosphors display their characteristic emission. With Tb3+ doped in Y2O3, a bright green emission is obtained; when Eu3+ is introduced into the material Y2O3: Tb3+, the emission color can be adjusted to white light. The calculated CIE chromaticity coordinates of RE ions activated Y2O3 phosphors confirm the green and white emissions
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