An effective way of improving photoluminescence (PL) of YAG:Ce by addition of small amount of SiC and sintering in air was described. The breakdown of SiC during sintering process in air was employed to provide the presence of SiO₂ and CO both of which are known to be beneficial in enhancing the PL of YAG:Ce phosphor. SiC in the form of a fine powder was added to YAG:Ce powder and sintered to densities of >99% of theoretical density. The highest luminescence was measured in sample containing 0.08 wt% SiC. The effect of the formed SiO₂ and CO was discussed and their contribution to the emission intensity was assessed. The enhancement of PL intensity is attributed to the formation of vacancies, both on Y sub-lattice and on oxygen sub-lattice and their ability to release the electrons for subsequent reduction of Ce⁴⁺ to Ce³⁺ which plays a role of luminescence activator.

描述了一种通过添加少量SiC并在空气中烧结来改善YAG：Ce的光致发光（PL）的有效方法。在空气中的烧结过程中，SiC的分解被用来提供SiO ₂和CO的存在，这两种已知都有助于提高YAG：Ce荧光粉的PL。将细粉形式的SiC添加到YAG：Ce粉末中，并烧结至> 99％理论密度的密度。在包含0.08 wt％SiC的样品中测量到最高的发光度。形成的SiO _2的作用讨论了CO，并评估了它们对排放强度的贡献。PL强度的增强归因于Y亚晶格和氧亚晶格上空位的形成，以及它们释放电子以随后将Ce ⁴⁺还原为Ce ^3+的能力，后者起着发光激活剂的作用。