Structure and luminescence properties of Zn3V2O8 yellow phosphor for white light emitting diodes

Extensive attention has been focused on the development of rare-earth-free phosphors, due to their low cost, good absorption and emission properties. However, the yellow light emitted phosphors with good quantum yield and thermal stability are still urgent Herein, we successfully prepare the single-phase Zn(3)V(2)O(8 )yellow phosphor through a solid state reaction method. The as-prepared phosphors present a broad absorption band in UV/NUV region, and exhibit an intense broadband emission spectrum under the NUV light excitation at 365 nm. The Zn3V2O8 phosphors also show excellent luminescence performance including strong emission intensity, long PL lifetime, high quantum yield, and good thermal stability. Moreover, this sample obtains a CIE coordinate of (0.364, 0.486) in the yellow light region. Therefore, the Zn3V2O8 phosphors can be considered as a novel yellow light source for w-LED devices.