Structure, luminescence investigation in Dy3+, Eu3+and Ce3+, Dy3+co-activated Sr9MgK(PO4)7 phosphors by energy transfer mechanism

Phosphate based phosphor makes a special impact in the field of luminescent spectroscopy applications from several decades. In the proposed work Dy3+, Eu3+ co-activated and Ce3+, Dy3+ co-activated Sr9MgK(PO4)7 phosphors have been synthesized via solid state reaction method. Phase confirmation and crystal structure determination of proposed sample were confirmed by Rietveld refinement analysis. Crystal structure of the proposed phosphor is in the tetragonal phase with space group R3c. The particle size of the proposed phosphors was in the range of sub-micrometers confirmed by SEM analysis. Photoluminescence study of the proposed sample confirms the spectral tuning from blue to red and blue to white. All these results shows that the Dy3+, Eu3+ co-activated and Ce3+, Dy3+ co-activated Sr9MgK(PO4)7 phosphors are proving their worth as they are might be the potential candidate for color tunable LEDs applications.

Automated summary

In this study, Dy3+, Eu3+ co-activated and Ce3+, Dy3+ co-activated Sr9MgK(PO4)7 phosphors were synthesized via solid state reaction method. Rietveld refinement analysis confirmed the phase confirmation and crystal structure determination of the proposed sample, which showed a tetragonal structure with space group R3c. SEM analysis confirmed the sub-micrometer particle size of the phosphors. Photoluminescence study demonstrated the spectral tuning capability of the phosphors from blue to red and blue to white. These results highlight the potential of Dy3+, Eu3+ co-activated and Ce3+, Dy3+ co-activated Sr9MgK(PO4)7 phosphors for color tunable LEDs applications.