Synthesizing Novel Technique of (Y1-xCex)(3)Al5O12 (x=0.005 similar to 0.03) Phosphors and Their Fluorescence Properties
Synthesizing Novel Technique of (Y1-xCex)(3)Al5O12 (x=0.005 similar to 0.03) Phosphors and Their Fluorescence Properties
复制标题
(Y1-xCex)(3)Al5O12 (x=0.005 近似于0.03)荧光粉的合成新工艺及其荧光性能
DOI：
10.1166/sam.2018.3256
复制
发表时间：
2018
影响因子：
0.9
通讯作者：
Xiwei Qi
中科院分区：
文献类型：
--
作者：
Jinsheng Li;Xudong Sun;Buhang Chen;Yuwen Zhang;Zhifa Liu;Yaohao Du;Lei Wu;Xiwei Qi
The formation of (Y1–x Ce x )3Al5O12 (x = 0.005∼0.03) garnet solid solution and submicrometer-sized powders have been developed via the new stearate melting method using dodecylbenzene sulfonic acid as surface active agent. The resultant powders are characterized with XRD, SEM, PL/PLE and fluorescence decay analysis. It is shown that the phase-pure YAG can be obtained through calcining the co-melted precursor at a relatively low temperature of 800 °C. The resultant garnet powders even calcined at 1500 °C are well dispersed and possess unified particle size, which exhibit strong luminescence covering from 475 to 650 nm with highest band at 544 nm under excitation wavelength λex = 455 nm (2F7/2 → 5d). Fluorescence decay analysis found the fluorescence lifetime of (Y1–x Ce x )3Al5O12 (x = 0.005∼0.03) phosphors decreased with the increase of Ce concentrations and temperatures. Meanwhile, comparing between ammonium bicarbonate co-precipitation and the stearate melting method, the fluorescence decay curves have similar regular patterns. While the fluorescence lifetime value is different under the same Ce concentration, calcined temperature and the similar particle size of the YAG:Ce powders.
