Effect of gallium ion content on thermal stability and reliability of YAG: Ce phosphor films for white LEDs

doi:10.1016/j.ceramint.2017.10.056

	Effect of gallium ion content on thermal stability and reliability of YAG: Ce phosphor films for white LEDs
	Liu, Yiming 1; Zou, Jun 2; Shi, Mingming 2; Yang, Bobo 2; Han, Ying 4; Li, Wenbo 3; Wang, Ziming 1; Zhou, Heyu 1; Li, Mengtian 1; Jiang, Nan 1
刊名	Ceramics International
	2018
卷号	44 期号:1 页码:1091-1098
ISSN号	02728842
DOI	10.1016/j.ceramint.2017.10.056
英文摘要	Y2.94(Al1−xGax)5O12:0.06Ce (x = 0.05, 0.1, 0.15, 0.2, 0.25, 0.3) phosphors were prepared by conventional solid-state reaction. Phosphor films are prepared from the synthesized Y2.94(Al1−xGax)5O12:0.06Ce phosphors by a simple spin coating method. The influence of different content of Ga3+doping on the photoluminescence (PL) spectra, thermal stability and reliability of prepared Y2.94(Al1−xGax)5O12:0.06Ce (x = 0.05, 0.1, 0.15, 0.2, 0.25, 0.3) phosphor films were investigated. The emission peak of the Y2.94(Al1−xGax)5O12:0.06Ce (x = 0.05, 0.1, 0.15, 0.2, 0.25, 0.3) phosphor films shifted from 545 nm to 520 nm with the Ga3+content(i.e. the value of x) increasing from 0.05 to 0.3 excited at 460 nm. The phosphor films have excellent thermal stability, and the intensities of PL spectra decrease by about 2%, 5%, 20% and 50% at 373 K, 423 K, 473 K and 523 K, respectively. The xenon lamp aging test show that the relative PL spectra intensity of the phosphor films decreases to 95.55%, 96.24%, 96.05%, 97.67%, 95.96% and 93.22% with the x value is 0.05, 0.1, 0.15, 0.2, 0.25 and 0.3 after the xenon lamp aging test for 168 h. The high temperature and high humidity test show that the relative PL spectra intensity of the phosphor films decreases to 94.36%, 95.6%, 95.26%, 96.87%, 95.28% and 93.1% with the x value is 0.05, 0.1, 0.15, 0.2, 0.25 and 0.3 after the condition of 85 /RH85% for 168 h. The thermal cycling test show that the relative PL spectra intensity of the phosphor films decreases to 90.6%, 91.4%, 93.76%, 94.38%, 91.84% and 88.81% with the x value is 0.05, 0.1, 0.15, 0.2, 0.25 and 0.3 after the condition of 120 for 1 h and −40 for 1 h by turns for eight times. So, it can be generalized that low level of Ga3+doping can enhance the thermal stability and reliability of Y2.94(Al1−xGax)5O12:0.06Ce phosphor films. © 2017
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25181]
专题	中国科学院上海硅酸盐研究所
作者单位	1.School of Material Science and Engineering, Shanghai Institute of Technology, Shanghai; 201418, China; 2.School of Science, Shanghai Institute of Technology, Shanghai; 201418, China; 3.Zhejiang Emitting Optoelectronic Technology Co, Ltd., Jiaxing; Zhejiang; 314100, China; 4.Tecore Synchem Optoelectronic Technologies (Tianjin) Co, Ltd., Tianjin; 300451, China
推荐引用方式 GB/T 7714	Liu, Yiming,Zou, Jun,Shi, Mingming,et al. Effect of gallium ion content on thermal stability and reliability of YAG: Ce phosphor films for white LEDs[J]. Ceramics International,2018,44(1):1091-1098.
APA	Liu, Yiming.,Zou, Jun.,Shi, Mingming.,Yang, Bobo.,Han, Ying.,...&Jiang, Nan.(2018).Effect of gallium ion content on thermal stability and reliability of YAG: Ce phosphor films for white LEDs.Ceramics International,44(1),1091-1098.
MLA	Liu, Yiming,et al."Effect of gallium ion content on thermal stability and reliability of YAG: Ce phosphor films for white LEDs".Ceramics International 44.1(2018):1091-1098.