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A series of KY(VO):Eu phosphors were synthesized by a high-temperature solid-state reaction method. The luminescence properties were characterized by means of photoluminescence excitation and emission spectra, CIE chromaticity, and concentration quenching. The excitation spectrum exhibits a broad band centered at about 324 nm in the region from 215 to 375 nm corresponding to an overlap of the charge transfer transitions of VO and O → Eu. The present phosphors exhibit green and red colors due to the host emissions of host and Eu ions. The intensity ratio of D → F to D → F is highly dependent on the Eu ions concentration due to the structure change of host. Eu-doped KY(VO) phosphors show tunable CIE color coordinates from green to red dependent on Eu content and excitation wavelength. The ideal red and warm white lights have been obtained from the phosphors by appropriately adjusted excitation wavelength. The results indicate that KY(VO):Eu is potential phosphors for white light-emitting diodes applications and color display devices. [ABSTRACT FROM AUTHOR]