Effect of surface treatment upon luminous efficiency of YAG: Ce ceramics

被引：2
|
作者：
Li, Yanan [1 ,3 ]
Zhang, Haitao [1 ,3 ]
Ling, Junrong [2 ,3 ]
Yang, Jian [2 ,3 ]
Xu, Wentao [2 ,3 ]
Zhou, Youfu [2 ,3 ,4 ]
Hong, Maochun [2 ,3 ]
机构：
[1] Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou, Peoples R China
[2] Fujian Sci & Technol Innovat Lab Optoelect Informa, Fuzhou, Peoples R China
[3] Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Optoelect Mat Chem & Phys, Fuzhou, Peoples R China
[4] Fujian Sci & Technol Innovat Lab Optoelect Informa, Fuzhou 350108, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2024年 / 21卷 / 01期
关键词：
high-power LEDs; surface roughening; transparent ceramics; YAG; Ce; CEYAG TRANSPARENT CERAMICS; COLOR RENDERING INDEX; LIGHT-SCATTERING; GLASS-CERAMICS; LUMINESCENCE; PHOSPHOR; PHOTOLUMINESCENCE; FABRICATION; WLEDS;
D O I：
10.1111/ijac.14505
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
For high-power white light-emitting diode devices (WLEDs), phosphor ceramics were widely used because of their high thermal conductivity and temperature resistance. In this study, Y2.998Al5O12: 0.002Ce(3+) ceramics were prepared via vacuum reaction sintering and treated by silicon carbide (SiC) abrasives with particle sizes of 8.6, 20, 25, 34, and 50 & mu;m to obtain a single textured surface. The transmittance, reflectance, luminous efficiency (LE) and photoluminescence (PL) intensity of the ceramics were investigated with various surface roughness and different placement. Compared with the double polished (DP) samples, the PL intensity and LE of the single-surface textured ceramics were greatly improved. It was shown that the roughest ceramics placed with the single polished (SP) side facing the direction of the excitation light (the SP-forward YAG: Ce ceramics) showed the best performance.
引用
收藏
页码：525 / 531
页数：7
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