The effect of the porosity on the Al2O3-YAG:Ce phosphor ceramic: Microstructure, luminescent efficiency, and luminous stability in laser- driven lighting

被引：66

作者：

Liu, Zehua ^{[1
,2
]}

Li, Shuxing ^{[3
]}

Huang, Yihua ^{[1
,2
]}

Wang, Lujie ^{[1
,2
]}

Zhang, Hui ^{[1
,2
,4
]}

Jiang, Rongrong ^{[5
]}

Huang, Fan ^{[6
]}

Yao, Xiumin ^{[1
,2
]}

Liu, Xuejian ^{[1
,2
]}

Huang, Zhengren ^{[1
,2
,5
]}

机构：

[1] Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Xiamen Univ, Coll Mat, Xiamen 361005, Peoples R China

[4] Chinese Acad Sci, Shanghai Inst Ceram, Suzhou Inst, Suzhou 215499, Peoples R China

[5] Ningbo Inst Ind Technol, Ningbo 315000, Zhejiang, Peoples R China

[6] Supervis Laser Technol Suzhou Co Ltd, Suzhou 215000, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 785卷

基金：

中国博士后科学基金; 中国国家自然科学基金; 上海市自然科学基金; 国家重点研发计划;

关键词：

Laser lighting; Composite ceramics; Luminescent efficiency; CCT; CRI; CONVERTER;

D O I：

10.1016/j.jallcom.2019.01.175

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Solid-state laser lighting (SSL) fabricated by integrating laser diode with phosphor is a new development to achieve high luminance. Because of the high temperature caused by the laser, the phosphor conversion apparatus is demanded to possess excellent thermal properties. In this paper, we utilized spark plasma sintering (SPS) to prepare the Al2O3-YAG:Ce phosphor ceramics with outstanding performances. Due to the high thermal conductivity and high transmittance, a high saturation input power (32 W/mm(2)) can be achieved for the sample with the lowest porosity. The correlated color temperature (CCT) and color rendering index (CRI) of composite ceramics with the lowest porosity are stable as the input power increases from 0.7 W/mm(2) to 30.8 W/mm(2) . Nevertheless, the sample with the highest porosity shows the highest luminescence efficiency (305 lm/W) and luminous emittances (1796 lm/mm(2)), which can be ascribed to the scattering of the pore. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：125 / 130

页数：6

共 31 条

[31] Mn2+ and Mn4+ red phosphors: synthesis, luminescence and applications in WLEDs. A review
Zhou, Qiang
Dolgov, Leonid
Srivastava, Alok M.
Zhou, Lei
Wang, Zhengliang
Shi, Jianxin
Dramicanin, Miroslav D.
Brik, Mikhail G.
Wu, Mingmei
[J]. JOURNAL OF MATERIALS CHEMISTRY C, 2018, 6 (11) : 2652 - 2671

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