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Effect of gallium ion content on thermal stability and reliability of YAG: Ce phosphor films for white LEDs
Liu, Yiming1; Zou, Jun2; Shi, Mingming2; Yang, Bobo2; Han, Ying4; Li, Wenbo3; Wang, Ziming1; Zhou, Heyu1; Li, Mengtian1; Jiang, Nan1
2018
Source PublicationCeramics International
ISSN02728842
Volume44Issue:1Pages:1091-1098
AbstractY2.94(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
DOI10.1016/j.ceramint.2017.10.056
PublisherElsevier Ltd
EI KeywordsFilm preparation
EI Classification Number549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 641.1 Thermodynamics - 707.2 Electric Lamps - 712.1 Semiconducting Materials - 714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 802.2 Chemical Reactions - 804 Chemical Products Generally
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25181
Collection中国科学院上海硅酸盐研究所
Affiliation1.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
Recommended Citation
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.
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