关键词: 荧光材料;长余辉;铝酸锶;原位还原

Abstract: Eu and Dy were used as excited ions,and Eu3+ was in-situ reduced to Eu2+ by insufficient combustion of introducing different amounts of glucose in the substrate material under the air atmosphere, and the SrAl2 O4-based long-lasting phosphor materials with Eu2+ corresponding green emission were prepared. The results show that the phase of the phosphor powder prepared by this method is mainly SrAl2 O4 . Addition of glucose makes the particle size of the sample becomes small and evenly distributed. The fluorescent emission intensity of samples firstly increases and then decreases with the increasing of glucose addition. The problem that the SrAl2 O4 based long-lasting phosphorescent material is prepared by the traditional solid-phase reaction method that depend reduction atmosphere and the particle size is difficult to be post-processed is solved by this method,which provides a greater possibility for the further application of the SrAl2 O4 based long-lasting phosphor.

Key words: phosphor material;long-lasting;strontium aluminate;in-situ reduction