Synthesis and luminescence properties of color-tunable Dy3+/Eu3+: CeAlON phosphors

Color-tunable Dy3+/Eu3+ co-doped in Ce2AlO3N phosphors were synthesized via a simple conventional solid state reaction. The as-prepared samples were characterized by XRD, TEM and photoluminescence spectra. Results show that the concentrations of Eu3+ ions can affect the blue and yellow emission intensities of Dy3+, and tunable emission color can be obtained by adjusting the doping concentrations of Eu3+. Based on the energy levers of Eu3+and Dy3+, the mechanism of tunable color has been presented in detail. The thermal stability of Dy3+/Eu3+: Ce2AlO3N has also been discussed.