Scintillation and luminescence properties of Ce-activated K3Lu(PO4)2

K3Lu(PO4)2:Ce single crystals have been studied under gamma, X-ray, VUV, and UV excitation. For all of the excitation forms, the luminescence of these materials is dominated by the d-f emission bands of Ce3+. The shape and position of these bands, however, depends on the form of the excitation and on temperature due to crystallographic structural phase changes and multiple types of Lu3+ ions sites in the which the Ce3+ ion can substitute for Lu. The highly efficient and fast scintillation of these materials is based on radiative recombination of electron-hole pairs via Ce ions, and the scintillation characteristics identify K3Lu(PO4)2:Ce as a promising fast and efficient scintillator