Preparation And Characterization Of YAG: Ce³⁺ Photoluminescence Material For Semi-conductor Luminiation

YAG:Ce³⁺ Photoluminescence Material is widely used in LED because of their excellent fluorescence property, such as caloric stability. They will make breakthroughs in illumination technique and will greatly speed up the process of illumination industries.In the article, the development of YAG:Ce³⁺ photoluminescent materials and photoluminescent mechanism and common preparation methods were introduced. YAG:Ce³⁺ phosphor particles were prepared by solid-state reation. Y2O3, CeO2 and Al2O3 were the main raw materials.The products were characterized by means of XRD, TEM and energy spectra on their crystal structures. The crystal structures and fluorescence property of the as-prepared YAG:Ce³⁺ were mainly influenced by heating temperature, concentration of Ce³⁺ , substitute of cations in the host matrix etc.The best conditions were obtained and provided the necessary theoretical basis for the development of luminous technique.Second, in this experiment, the fluorescence property of as-synthesized YAG:Ce³⁺ photoluminescent materials was characterized by luminescence spectrum. The result shows that YAG:Ce³⁺ owns excellent fluorescence property. In this part, synthesis conditions were changed to study their effect on the fluorescence property of YAG:Ce³⁺. The conditions include doping concentration,heating temperature, substitute of cations in the host matrix, way of abrasive action etc, and the mechanisms are discussed.