Ce3+ and Dy3+ doped Ca3(P1-xBxO4)2 phosphors for white light-emitting applications

A series of Ce3+, Dy3+ doped Ca-3(P1-xBxO4)(2) phosphors were synthesized by a high temperature solid-state reaction method, and their corresponding structure, morphology, and luminescence properties were investigated. It is found that the crystal phase transition from beta-Ca-3(PO4)(2) to Ca-5(PO4)(3)(OH) gradually occurs with increasing the boron content in the phosphors, which can provide various local environments for the doping ions and consequently affect the luminescence properties of the phosphors. A red shift of the emission peak of Ce3+ was revealed upon incorporation of boron into Ce/Dy co-doped phosphors. In addition, the luminescence properties could be well modulated by varying the excitation wavelength. The developed phosphors have great potential as a kind of single component white light-emitting phosphors for white light-emitting diodes. (C) 2018 Elsevier B.V. All rights reserved.