Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5400135 | Journal of Luminescence | 2014 | 6 Pages |
Abstract
LiBaPO4:Dy3+ phosphors were synthesized by microwave-assisted and conventional sintering. XRD analysis confirmed the phase formation of all the LiBaPO4:Dy3+ phosphors. PL results showed that the optimum concentration of Dy3+ for LiBaPO4:Dy3+ prepared by microwave-assisted sintering is 7Â mol%. The phosphors were efficiently excited by the UV-vis light region from 300 to 400Â nm, and exhibited blue (483Â nm), yellow (576Â nm) and red (671Â nm) emission corresponding to 4F9/2â6H15/2, 6H13/2, and 6H11/2 transitions, respectively. The microwave-assisted sintering improves the sintering behavior and provides a more uniform particle morphology of LiBa0.03PO4:0.07Dy3+ phosphors so as to obtain a luminescence intensity greater than that obtained by conventional sintering even at the same sintering temperature. Moreover, all the chromaticity (x, y) of the LiBa0.03PO4:0.07Dy3+ phosphors are located in the white region (0.33, 0.37) even on using microwave-assisted sintering as the heat treatment did not influence the purity of LiBa0.03PO4:0.07Dy3+ phosphors.
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Authors
Ru-Yuan Yang, Hsuan-Lin Lai,