Microwave Assisted Sintering and Photoluminescence Properties of Ba$lt;inf$gt;3$lt;/inf$gt;Si$lt;inf$gt;6$lt;/inf$gt;O$lt;inf$gt;12$lt;/inf$gt;N$lt;inf$gt;2$lt;/inf$gt;:Eu$lt;sup$gt;2+$lt;/sup$gt; Green Phosphors

Eu 2+ -doped Ba 3 Si 6 O 12 N 2 green phosphors were prepared by microwave assisted sintering method at 1275 for 4 h, while the counterparts using conventional solid-state reaction method were synthesized at temperature higher than 1300 and for to 10 h. Microwave assisted sintering could reduce the activation energy and enhance the diffusion rate, thus greatly improved the sintering. Moreover, the influence of Si 3 N 4 content on phase formation, morphology, absorption, and quantum efficiency, and photoluminescence properties of phosphors were studied. As a result, the Ba 3 Si 6 O 12 N 2 :Eu 2+ samples sintered by microwave assisted sintering method have a higher phase purity and photoluminescence intensity under ultraviolet excitation as compared with samples sintered in the conventional tube furnace.