Ca10K(PO4)7:Eu2+, Sr2+, Mg2+ (CKP:Eu2+, Sr2+, Mg2+) phosphors were prepared by the solid-state reaction method, and their photoluminescence properties under near-ultraviolet excitation were studied. By measuring the diffuse reflection spectrum, the optical bandgap of the CKP host was determined to be about 5.39 eV. Eu2+-activated CKP shows an asymmetrical emission band in the range of 425–650 nm, derived from various Eu2+ emission centers. The corresponding excitation spectrum presents a broad excitation band which can match well with the emission wavelength of the near ultraviolet LED chip. By introducing Sr2+ and Mg2+ into CKP:Eu2+, tunable emission has been realized from light blue to greenish yellow including white, which is mainly owing to the effect of Sr2+ and Mg2+ on the structure of CKP. The above investigation results indicate the CKP:Eu2+, Sr2+, Mg2+ phosphors have potential applications in white LEDs.

•The SrWO4:Tb3+ can be excited by both photons and electrons used in PDPs and FEDs, respectively.•The SrWO4:Tb3+ exhibits dispersive spindle-like particles on the whole.•The results can provide useful basic data for further work of phosphor study.The SrWO4 and SrWO4:Tb3+ samples were prepared by a simple precipitation method, and the morphology, photoluminescence and cathodoluminescence (CL) properties were investigated. The optical bandgap of SrWO4 is determined to be 4.73 eV experimentally, and a red-shift of the absorption edge is observed when Tb3+ is doped. The samples show spindle-like particles with average length of about 10 μm on the whole, but some particles of other shapes are also found. Under 254 and 147 nm excitation, the Sr0.9WO4:0.1Tb3+ phosphor exhibits typical Tb3+ green emission. The absorption bands of the WO42- group appear in the excitation spectra of both the SrWO4 and Sr0.9WO4:0.1Tb3+. By measuring the CL spectra of Sr0.9WO4:0.1Tb3+, the typical Tb3+ emission peaks are found. The above results indicate the SrWO4:Tb3+ phosphor can be excited by both photons and electrons, which has potential application in PDPs and FEDs.