发光学报2024，Vol.45Issue(3)：434-442,9.DOI:10.37188/CJL.20230275
无压烧结制备Y2MgAl4SiO12∶Ce3+荧光陶瓷及光学性能
Preparation and Optical Properties of Y2MgAl4SiO12:Ce3+ Fluorescent Ceramics by Pressureless Sintering
摘要
Abstract
Y3Al5O12∶Ce3+(YAG∶Ce)phosphor is the main luminous material for white light emitting diode(LED)or laser diode(LD)at present,but it has some drawbacks such as aging due to poor heat dissipation.In this paper,Y2MgAl4SiO12∶Ce3+(YMAS∶Ce)transparent ceramic fluorophores were prepared by simple pressureless sintering,which can replace traditional fluorescent powder and regulate luminescence performance.The precursor powder was prepared by chemical coprecipitation method and calcined at high temperature.Green body disks were formed by cold isostatic pressing using the sintered powder.Finally,transparent fluorescent ceramics were prepared by calcin-ing the disks at 1 600℃temperature in a muffle furnace.The effect of Ce3+ doping concentration and sample thick-ness on the properties of the material was studied.The sample doped 0.5%of Ce3+ possessed 56%transmittance at 800 nm,and its luminescence intensity at 450 K is still maintain 84%of that at room temperature.The device com-bined with the fluorescent ceramics can emit white light under the excitation of blue LEDs/LDs.The corresponding CIE chromaticity coordinates were(0.307 6,0.332 9)and(0.308 0,0.331 6),and the luminous efficiency was 62.6 lm/W and 146.3 lm/W,respectively.The results show that YMAS∶Ce fluorescent ceramics can be applied to white LEDs/LDs.关键词
无压烧结/Y2MgAl4SiO12∶Ce3+/荧光陶瓷/白光LEDs/LDsKey words
pressureless sintering/Y2MgAl4SiO12∶Ce/fluorescent ceramic/white LEDs/LDs分类
数理科学引用本文复制引用
王靖涛,王茗,王森宇,徐祖盛,梁莹盈,张瑞..无压烧结制备Y2MgAl4SiO12∶Ce3+荧光陶瓷及光学性能[J].发光学报,2024,45(3):434-442,9.基金项目
国家自然科学基金(52062008) （52062008）
广西杰出专家专项基金(2019B06)Supported by National Natural Science Foundation of China(52062008) （2019B06）
Guangxi Distinguished Experts Special Fund(2019B06) （2019B06）
