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Green-yellow Emission Ce∶LuAG Transparent Ceramics for High-brightness Solid-state Lighting
增强出版- 发光学报 Vol. 42, Issue 10, Pages: 1520-1530(2021)
- 作者机构：
1.江苏大学 材料科学与工程学院，江苏 镇江 212013
2.中国科学院上海硅酸盐研究所 透明光功能无机材料重点实验室，上海 201899
3.中国科学院大学 材料与光电研究中心，北京 100049
4.上海应用技术大学 理学院，上海 201418
5.厦门大学 材料学院，福建 厦门 361005
- 作者简介：
[ "刘强(1964-)，男，江苏镇江人，博士，教授，硕士研究生导师，2005年于江苏大学获得博士学位，主要从事发光材料和透明陶瓷等方面的研究。E-mail: lq88611338@163.com" ]
[ "李江(1977-)，男，浙江绍兴人，博士，研究员，博士研究生导师，2007年于中国科学院上海硅酸盐研究所获得博士学位，主要从事光功能透明陶瓷方面的研究。E-mail: lijiang@mail.sic.ac.cn" ]
- 基金信息：National Key R&D Program of China(2017YFB0310500);National Natural Science Foundation of China(61775226);Key Research Project of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-JSC022)
DOI：10.37188/CJL.20210116
CLC： O482.31;TQ174Received：31 March 2021，
Revised：15 April 2021，
Published：01 October 2021
- 稿件说明：
移动端阅览
Qiang LIU, Wan-yuan LI, Xin LIU, et al. Green-yellow Emission Ce∶LuAG Transparent Ceramics for High-brightness Solid-state Lighting[J]. 发光学报, 2021, 42(10): 1520-1530.
Qiang LIU, Wan-yuan LI, Xin LIU, et al. Green-yellow Emission Ce∶LuAG Transparent Ceramics for High-brightness Solid-state Lighting[J]. 发光学报, 2021, 42(10): 1520-1530. DOI： 10.37188/CJL.20210116.
摘要
通过固相反应结合真空烧结制备了(Ce
x
Lu
1-
x
)
3
Al
5
O
12
(Ce∶LuAG
x
=0.0005
0.001
0.002
0.003
0.004)透明陶瓷. 厚度为1.0 mm的Ce∶LuAG陶瓷在500~800 nm波长范围内的直线透过率大于75%. 研究了不同浓度Ce∶LuAG陶瓷在454 nm蓝光LED激发下的吸收和发射特性，获得了可调的相关色温(5 653~7 433 K). 所制备的Ce∶LuAG陶瓷具有优异的热性能和发光性能，在225 ℃下的PL强度较室温仅下降7%
0.1%Ce∶LuAG陶瓷在蓝光LED激发下的发光效率达到179 lm/W. 进一步研究了不同厚度Ce∶LuAG陶瓷的发光饱和性能，1 mm厚的0.1%Ce∶LuAG陶瓷在功率密度为24.6 W/mm
2
的蓝光LD激发下获得了3 646 lm的高光通量，同时没有出现发光饱和现象. 研究结果表明，Ce∶LuAG透明陶瓷具有高发光效率和热稳定性，适合用于大功率固态照明.
Abstract
A series of (Ce
x
Lu
1-
x
)
3
Al
5
O
12
(Ce∶LuAG
x
=0.0005
0.001
0.002
0.003
0.004) transparent ceramics were prepared
via
high-temperature reactive sintering under vacuum. The in-line transmittances of these transparent ceramics are higher than 75% at 500-800 nm with a thickness of 1.0 mm. Absorption and emission properties of ceramics with different Ce
3+
concentrations excited by 454 nm blue LED were investigated. An adjustable correlated color temperature(CCT)(5 653-7 433 K) was obtained. The as-prepared ceramics show remarkably superior thermal and luminescent properties: a low thermal quenching(7% drop at 225 ℃)
and a high luminous efficacy of 179 lm/W were obtained in the 0.1%Ce∶LuAG ceramics(1.0 mm thick) coupled with commercial blue InGaN LED chips
which also shows increasing emission intensity with increasing input power(up to 3.6 W). A high flux of 3 646 lm was obtained with robust Ce∶LuAG ceramics irradiated with a high laser power density of 24.6 W/mm
2
. Obviously
the fabricated transparent Ce∶LuAG ceramics are quite prospective as a highly efficient and thermally robust green-yellow color converter for high-power solid-state lighting(SSL) application.
关键词
Keywords
references
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