Abstract
A novel single phased white emitting phosphor Sr3La(PO4)3:Eu2+, Sm3+ was synthesized by the solid-state method, and the crystal structure and luminescence properties of phosphors were investigated in detail by the X-ray diffraction, photoluminescence spectra and decay curves. Through the energy transfer, the warm white light can be realized with superior chromaticity coordinates of (0.3824, 0.3381), low correlated color temperature (CCT = 3598 K), and Ra of 78.4 by varying the molar ratios of Eu2+ and Sm3+ in the Sr3La(PO4)3:Eu2+, Sm3+ phosphor. The results indicate that the developed phosphor can be used as a potential warm white emitting phosphor for white light emitting diodes.
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