Photoluminescence characteristics of YAG:Tb phosphor particles with spherical morphology and non-aggregation
Photoluminescence characteristics of YAG:Tb phosphor particles with spherical morphology and non-aggregation
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DOI：
10.1016/s0022-3697(99)00191-2
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发表时间：
1999-11
影响因子：
4
通讯作者：
Y. Kang;I. Lenggoro;Seung-Bin Park;K. Okuyama
中科院分区：
文献类型：
--
作者：
Y. Kang;I. Lenggoro;Seung-Bin Park;K. Okuyama
采用喷雾热分解法制备了球形、尺寸细小、无团聚的YAG：Tb粉体。制备的颗粒的特性，如结晶度，形态，和光致发光进行了比较与商业YAG：Tb荧光粉颗粒。未使用助熔剂的纳米粒子结晶度高于市售产品，且在1400°C下处理5h后仍保持球形度和不团聚特性。制备的颗粒的平均尺寸为0.94μm。当Tb的掺杂浓度为2.5at.%时，YAG：Tb颗粒的亮度最大最佳后处理温度为1400°C。在1400°C下后处理的颗粒的光致发光亮度与商业产品的光致发光亮度处于相同的量级。
YAG:Tb particles with sphericity, fine size and non-aggregation characteristics were prepared by a spray pyrolysis process. The characteristics of prepared particles such as crystallinity, morphology, and photoluminescence were compared with those of commercial YAG:Tb phosphor particles. The prepared particles without using flux had higher crystallinity than that of the commercial products and maintained its sphericity and non-aggregation characteristics even after post-treatment at 1400°C for 5h. The mean size of the prepared particles was 0.94μm. For the maximum brightness of YAG:Tb particles, the doping concentration of Tb was 2.5at.% and the optimum post-treatment temperature was 1400°C. The photoluminescence brightness of particles post-treated at 1400°C was in the same order comparing to that of the commercial product.