摘要
为改善高温固相反应制备的铈掺杂钇铝石榴(YAG∶Ce3+)黄光荧光粉的发光性能,分别采用浓氨水、N,N-二甲基乙酰胺(DMAC)、三乙醇胺、聚丙烯酰胺和六次甲基四胺等的水溶液对其进行浸泡处理,比较了处理剂浓度、用量和处理剂类型对荧光粉发光强度、荧光粉温度、猝灭性能和形貌的影响,确定了以30%氨水在50℃浸泡50 min为优化的处理工艺,YAG∶Ce3+荧光粉发光强度比处理前约提高9.5%,荧光粉分散程度也得到改善,处理后粒径分布更加均匀。
In this work, a series of post-processing experiments was conducted on cerium-doped yttrium aluminum garnet(YAG: Ce3+ ) yellow phosphor in order to improve their luminescent properties. Several kinds of alkali, e. g., ammonia, N, N-dimethylacetamide (DMAC), triethanolamine and polyacrylamide, were selected as post-processing reagents. Effect of the type, the concentration of the post-processing reagent, and the soaking on the PL intensity of YAG: Ce3 + were investigated in details. The optimum condition is to soak the phosphor in a 30% ammonia solution for 50 min at 50 ℃. The PL intensity of the phosphor increased about 9.5%, and the agglomeration among particles decreased after post-process.
出处
《应用化学》
CAS
CSCD
北大核心
2014年第5期577-580,共4页
Chinese Journal of Applied Chemistry
关键词
铈掺杂钇铝石榴石
荧光粉
后处理
发光强度
cerium-doped yttrium aluminum garnet, phosphor, post-processing, luminescent intensity