High-performance Al2O3-YAG:Ce composite ceramic phosphors for miniaturization of high-brightness white light-emitting diodes

被引：39
作者：
Zhao, Huanyu [1 ]
Li, Zhi [2 ]
Zhang, Mengwen [1 ]
Li, Jinsheng [1 ]
Wu, Minbo [1 ]
Li, Xiaodong [1 ]
Chen, Jialin [3 ]
Xie, Ming [3 ]
Li, Junpeng [3 ]
Sun, Xudong [1 ,2 ]
机构：
[1] Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Liaoning, Peoples R China
[2] Dalian Univ, Coll Environm & Chem Engn, Liaoning Engn Lab Special Opt Funct Crystals, Dalian 116622, Peoples R China
[3] Kunming Inst Precious Met, State Key Lab Adv Technol Comprehens Utilizat Pla, Kunming 650106, Yunnan, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2020年 / 46卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Thermal conductivity; Al2O3-YAG:Ce; Ceramic phosphor; WLED; HIGH-POWER LEDS; THERMAL-CONDUCTIVITY; TRANSPARENT CERAMICS; MICROSTRUCTURE; EFFICIENCY; STABILITY; LUMINESCENCE; CONVERTER; EXPANSION; Y3AL5O12;
D O I：
10.1016/j.ceramint.2019.09.017
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：
The miniaturization of high-brightness white light-emitting diodes (WLEDs) is limited by the low thermal performance of phosphors. In this study, the microstructure, optical properties, and thermal performance of Al2O3-Y3Al5O12:Ce3+ (Al2O3-YAG:Ce) composite ceramics fabricated by hot pressing were investigated. By promoting the growth of Al2O3 grains while maintaining a high composite density, thermal performance of the composite ceramics was significantly increased. The thermal conductivity of a Al2O3-40-vol% YAG:Ce ceramic reached 21.8 W/m/K, which is close to the theoretical value. In addition, this composite ceramic exhibited the highest energy efficiency. After packaging with a high-power LED chip with dimensions of 1 mm x 1 mm, a high luminous flux of 639 1m was generated, while the reduction in output power at 250 degrees C was as low as 6%. This indicated excellent high-temperature stability and potential for applications in solid-state lighting.
引用
收藏
页码：653 / 662
页数：10
相关论文
共 47 条
[1]   A nearly ideal phosphor-converted white light-emitting diode [J].
Allen, Steven C. ;
Steckl, Andrew J. .
APPLIED PHYSICS LETTERS, 2008, 92 (14)
[2]   Comparison of Two-Phase Thermal Conductivity Models with Experiments on Dilute Ceramic Composites [J].
Angle, Jesse P. ;
Wang, Zhaojie ;
Dames, Chris ;
Mecartney, Martha L. .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2013, 96 (09) :2935-2942
[3]   Influence of the Ce:YAG Amount on Structure and Optical Properties of Ce: YAG-PMMA Composites for White LED [J].
Armetta, Francesco ;
Sibeko, Motshabi A. ;
Luyt, Adriaan S. ;
Martino, Delia F. Chillura ;
Spinella, Alberto ;
Saladino, Maria Luisa .
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, 2016, 230 (09) :1219-1231
[4]   Temperature Quenching of Yellow Ce3+ Luminescence in YAG:Ce [J].
Bachmann, Volker ;
Ronda, Cees ;
Meijerink, Andries .
CHEMISTRY OF MATERIALS, 2009, 21 (10) :2077-2084
[5]   Thermal conductivity of zirconia-alumina composites [J].
Bansal, NP ;
Zhu, DM .
CERAMICS INTERNATIONAL, 2005, 31 (07) :911-916
[6]   THERMAL CONDUCTION IN ARTIFICIAL SAPPHIRE CRYSTALS AT LOW TEMPERATURES .1. NEARLY PERFECT CRYSTALS [J].
BERMAN, R ;
FOSTER, EL ;
ZIMAN, JM .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1955, 231 (1184) :130-144
[7]  
Cai PZ, 1997, J AM CERAM SOC, V80, P1929, DOI 10.1111/j.1151-2916.1997.tb03075.x
[8]   Thermal conductivity bounds for isotropic, porous materials [J].
Carson, JK ;
Lovatt, SJ ;
Tanner, DJ ;
Cleland, AC .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2005, 48 (11) :2150-2158
[9]   White light-emitting diodes: History, progress, and future [J].
Cho, Jaehee ;
Park, Jun Hyuk ;
Kim, Jong Kyu ;
Schubert, E. Fred .
LASER & PHOTONICS REVIEWS, 2017, 11 (02)
[10]   Stable, Heat-Conducting Phosphor Composites for High-Power Laser Lighting [J].
Cozzan, Clayton ;
Lheureux, Guillaume ;
O'Dea, Nicholas ;
Levin, Emily E. ;
Graser, Jake ;
Sparks, Taylor D. ;
Nakamura, Shuji ;
DenBaars, Steven P. ;
Weisbuch, Claude ;
Seshadri, Ram .
ACS APPLIED MATERIALS & INTERFACES, 2018, 10 (06) :5673-5681
12345