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A white emitting phosphor of YAl33(BO3)4:Ce+,Dy3+is synthesized by a solid state reaction,and its luminescent properties are investigated.Its phase formation is carried out with X-ray powder diffraction analysis,and there is no crystalline phase other than YAl3(BO3)4.YAl3(BO3)4:Ce3+can produce 422 nm blue emission under 367 nm excitation.The emission spectrum of YAl33(BO3)4:Dy+shows several emission peaks under 350 nm excitation,and the peaks locate at485 nm,575 nm and 668 nm,respectively.Emission intensities of Ce3+and Dy3+in YAl3(BO3)4 are influenced by their concentrations,and the concentration quenching effect is observed.Energy transfer from Ce3+to Dy3+in YAl3(BO3)4 is validated and proved to be a resonant type via a quadrupole-quadrupole interaction,and the emission color can be tuned from blue to white by tuning the ratio of Ce3+/Dy3+.Moreover,the critical distance(Rc)of Ce3+to Dy3+in YAl3(BO3)4 is calculated to be 1.904 nm.
A white emitting phosphor of YAl33 (BO3) 4: Ce +, Dy3 + is synthesized by a solid state reaction, and its luminescent properties are investigated. Its phase formation is carried out with X-ray powder diffraction analysis, and there is no crystalline phase other than YAl3 (BO3) 4.YAl3 (BO3) 4: Ce3 + can produce 422 nm blue emission under 367 nm excitation. The emission spectrum of YAl33 (BO3) 4: Dy + shows several emission peaks under 350 nm excitation, and the peaks locate at 485 nm, 575 nm and 668 nm, respectively. The emission intensities of Ce3 + and Dy3 + in YAl3 (BO3) 4 are influenced by their concentrations, and the concentration quenching effect is observed. Energy transfer from Ce3 + to Dy3 + YAl3 (BO3) 4 is validated and proved to be a resonant type via a quadrupole-quadrupole interaction, and the emission color can be tuned from blue to white by tuning the ratio of Ce3 + / Dy3 + .Moreover, the critical distance (Rc) of Ce3 + to Dy3 + in YAl3 (BO3) 4 is calculated to be 1.904 nm.