Abstract
K+ ions were incorporated into Ca4.75(PO4)3Cl: 0.05Eu2+, 0.2Mn2+ Phosphors, which has a significant effect on the photoluminescence properties of phosphors. With increasing the K+ concentration (x value) in Ca4.75−xKx(PO4)3Cl: 0.05Eu2+, 0.2Mn2+ (x=0-0.15), the emission intensity of Eu2+ increases and reaches its maximum value at the x=0.1, and then decreases for the higher K+ concentrations, which can be explained by charge compensations and crystal lattice strain relaxing. The results show a potential for increasing the emission intensity of Ca4.75(PO4)3Cl: 0.05Eu2+, 0.2Mn2+ phosphors by properly doping K+ ions.
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