Color Cathodoluminescence of SrAl2O4:Eu, Dy-Based Phosphors

Resumo

Single phase SrAl₂O₄:Eu²⁺ and multiphase {SrAl₂O₄ + Sr₄Al₁₄O₂₅}:Eu²⁺ phosphors were prepared by solid state reaction and combustion synthesis. It is shown that the emission band of the phosphors can be shifted from green to blue-green spectral range by changing the synthesis method. Composite color cathodoluminescence and photoluminescent analysis were applied to control the synthesis process. The presence of different emission centers and their distribution in studied phosphors was demonstrated.