二次煅烧制备铕掺杂钇铝石榴石粉体及其荧光性能
发布时间:2018-09-08 15:44
【摘要】:采用溶胶-凝胶法制备Eu~(3+)掺杂Y_3Al_5O_(12)的红色荧光粉,以不同的温度煅烧发现,在700℃煅烧的样品为非晶,已开始出现荧光性能,到1000℃时出现Y_3Al_5O_(12)纯相,随着煅烧温度的升高,样品的结晶度变好,晶粒长大,荧光强度增强,但温度达到1300℃时,样品的荧光强度稍有下降.对1000℃煅烧所得的样品进行低温二次煅烧处理表明,处理后的样品的物相和形貌无明显变化,但晶粒排列更有序,Eu~(3+)更均匀的置换Y~(3+)格点位置,同时也减少了表面缺陷,使荧光性能有明显增强.
[Abstract]:The red phosphors doped with Eu~ (3) -doped YS _ 3AL _ 5O _ (12) were prepared by sol-gel method. It was found that the samples calcined at 700 鈩,
本文编号:2230963
[Abstract]:The red phosphors doped with Eu~ (3) -doped YS _ 3AL _ 5O _ (12) were prepared by sol-gel method. It was found that the samples calcined at 700 鈩,
本文编号:2230963
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