Preparation and Optical Properties of Y2MgAl4SiO12∶Ce3+ Fluorescent Ceramics by Pressureless Sintering

被引：0
|
作者：
Wang J. [1 ]
Wang M. [1 ,2 ]
Wang S. [1 ]
Xu Z. [1 ]
Liang Y. [1 ]
Zhang R. [1 ,2 ]
机构：
[1] College of Materials Science and Engineering, Guilin University of Technology, Guilin
[2] Guangxi Key Laboratory of Optoelectronic Functional Materials and Devices, Guilin
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2024年 / 45卷 / 03期
基金：
中国国家自然科学基金;
关键词：
fluorescent ceramic; pressureless sintering; white LEDs/LDs; Y[!sub]2[!/sub]MgAl[!sub]4[!/sub]SiO[!sub]12[!/sub]∶Ce;
D O I：
10.37188/CJL.20230275
中图分类号：
学科分类号：
摘要：
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 calcining the disks at 1 600 ℃ temperature in a muffle furnace. The effect of Ce3+ doping concentration and sample thickness 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 combined 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. © 2024 Editorial Office of Chinese Optics. All rights reserved.
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页码：434 / 442
页数：8
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共 23 条
  • [1] KIM T H, WANG W T，LI Q., Advancement in materials for energy-saving lighting devices［J］, Front. Chem. Sci. Eng, 6, 1, pp. 13-26, (2012)
  • [2] ARJOCA S, VILLORA E G，, INOMATA D，, Et al., Temperature dependence of Ce∶YAG single-crystal phosphors for high-brightness white LEDs/LDs［J］, Mater. Res. Express, 2, 5, (2015)
  • [3] WIERER J J, SIZOV D S., Comparison between blue lasers and light-emitting diodes for future solid-state lighting［J］, Laser Photon. Rev, 7, 6, pp. 963-993, (2013)
  • [4] LI J, SAHI S, Et al., Optical and scintillation properties of Ce<sup>3+</sup>-doped LuAG and YAG transparent ceramics：a comparative study［J］, J. Am. Ceram. Soc, 100, 1, pp. 150-156, (2017)
  • [5] STERANKA F M, BHAT J, COLLINS D, Et al., High power LEDs-technology status and market applications［J］, Phys. Status Solidi A, 194, 2, pp. 380-388, (2002)
  • [6] ZHOU T, LIU X L, LIU Q S，, Et al., Highly thermal stable and color tunable composite fluorescent ceramics for high-power white LEDs［J］, Ceram. Int, 48, 13, pp. 18716-18722, (2022)
  • [7] JIA L C, ZHU J J，, BOYARYNTSEVA Y，, Et al., Effect of carbon doping on F-type defects in YAG and YAG∶Ce crystals ［J］, Phys. Status Solidi B, 258, 12, (2021)
  • [8] YANG L, ZHANG Q, Et al., Thermally stable lead-free phosphor in glass enhancement performance of light emitting diodes application［J］, Appl. Opt, 58, 15, pp. 4099-4104, (2019)
  • [9] ARMETTA F, SIBEKO M A, LUYT A S，, Et al., Influence of the Ce∶YAG amount on structure and optical properties of Ce∶ YAG-PMMA composites for white LED［J］, Z. Phys. Chem, 230, 9, pp. 1219-1231, (2016)
  • [10] SHITOV V A, Et al., Fabrication，optical and scintillation properties of transparent YAG∶Ce ceramics［J］, Opt. Mater, 71, pp. 98-102, (2017)
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