Abstract
Mg2Al4Si5O18:Eu2+ and nitrided Mg2Al4Si5O18:Eu2+ phosphors were synthesized through a high temperature sintering process. The luminescence characteristics of Mg2Al4Si5O18:Eu2+ phosphors and influence of nitridation on their luminescence characteristics were investigated. The XRD results demonstrate that the Eu2+ or N3− doping does not change the phase of Mg2Al4Si5O18 host. Under excitation at 365 nm, Mg2Al4Si5O18:Eu2+ phosphors exhibit emission band locating at blue light region. The introduction of N3− results in the reduction of Eu2+ emission intensity and redshift of Eu2+ emission spectrum. Meanwhile, the introduced N3− enhances the thermal stability and prolongs lifetime of Mg2Al4Si5O18:Eu2+ phosphors. On the basis of luminescence characteristics of Mg2Al4Si5O18:Eu2+ and nitrided Mg2Al4Si5O18:Eu2+, the influence of introduced N3− on luminescence was confirmed.
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