Temperature dependent luminescence of yellow-emitting α-sialon: Eu2+ oxynitride phosphors for white light-emitting diodes

被引：0
|
作者：
Liu, Lihong [1 ,2 ]
Xie, Rong-Jun [2 ]
Hirosaki, Naoto [2 ]
Takeda, Takashi [2 ]
Li, Jiguang [1 ]
Sun, Xudong [1 ]
机构：
[1] Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials and Metallurgy, Northeastern University, Liaoning 110004, China
[2] Nitride Particle Group, Nano Ceramics Center, National Institute for Materials Science, Ibaraki 305-0044, Japan
来源：
Journal of the American Ceramic Society | 2009年 / 92卷 / 11期
关键词：
Yellow-emitting α-sialon:Eu2+ phosphors have been reported as interesting down-conversion luminescent materials in white LEDs. In this work; the thermal quenching of α-sialon:Eu2+ with the compositions of Mval+(m/val+)Si12-(m+n)Al m+nOnN16-n (M=Ca; Mg; Lu) is studied by investigating the effects of chemical composition; activator concentration; and substitution cation on the temperature-dependent luminescence. The chemical composition of α-sialon:Eu2+ was varied in a wide range (0.5m2.0; 1n1.8). It shows that the m value significantly affects the thermal quenching of α-sialon; whereas the n value hardly does. This difference is ascribed to the obvious lattice expansion and the increase of absolute activator concentration as m increases. The thermal quenching increases with increasing the Eu2+ concentration; which is due to enhanced Stokes shift. The type of substitution cation also has an influence on thermal quenching. Among the substitution cations in this work; Lu-α-sialon:Eu2+ exhibits largest thermal quenching. Photoionization is considered as the mechanism for the thermal quenching of Lu-α-sialon: Eu2+. © 2009 The American Ceramic Society;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：2668 / 2673
相关论文
共 50 条
  • [41] Super broadband reddish emitting glass with Eu2+ doped for warm-white light-emitting diodes
    Liu, Zijun
    Yu, Yang
    Dai, Nengli
    Chen, Qiaoqiao
    Yang, Luyun
    Li, Jinyan
    Qiao, Yanbo
    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2012, 108 (04): : 777 - 781
  • [42] Eu2+-activated Ba2Mg(BO3)2 yellow-emitting phosphors for near ultraviolet-based light-emitting diodes
    Zhang, Xinguo
    Fei, Lianghao
    Shi, Jianxin
    Gong, Manglian
    PHYSICA B-CONDENSED MATTER, 2011, 406 (13) : 2616 - 2620
  • [43] Research progress on phosphors for white light-emitting diodes
    Xu, Xiu-Dong
    Xu, Gui-Zhen
    Wu, Zhan-Chao
    Wang, Zheng-Liang
    Gong, Meng-Lian
    Zhongshan Daxue Xuebao/Acta Scientiarum Natralium Universitatis Sunyatseni, 2007, 46 (05): : 124 - 128
  • [44] Yellow-Emitting Sr9Sc(PO4)7:Eu2+, Mn2+ Phosphor with Energy Transfer for Potential Application in White Light-Emitting Diodes
    Dong, Xiaoling
    Zhang, Jiahua
    Zhang, Liangliang
    Zhang, Xia
    Hao, Zhendong
    Luo, Yongshi
    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2014, 2014 (05) : 870 - 874
  • [45] Selecting Conversion Phosphors for White Light-Emitting Diodes
    Smet, Philippe F.
    Parmentier, Anthony B.
    Poelman, Dirk
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2011, 158 (06) : R37 - R54
  • [46] Research progress on phosphors for white light-emitting diodes
    School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
    Zhongshan Daxue Xuebao, 2007, 6 (125-130):
  • [47] Synthesis, luminescent properties and ab initio study of yellow-emitting Sr8MgGa(PO4)7:Eu2+phosphors for white light-emitting diodes
    Chen, Jou-An
    Piasecki, Michal
    Yang, Chun-Chuen
    Rudysh, Myron
    Liu, Wei-Ren
    JOURNAL OF LUMINESCENCE, 2021, 235
  • [48] Facile synthesis of Eu2+ activated dual light emitting barium silicate phosphors for warm-white light emitting diodes
    Som, Sudipta
    Kuo, Peng-Hsuan
    Lu, Chung-Hsin
    Journal of Alloys and Compounds, 2021, 790 : 1060 - 1064
  • [49] Advanced red phosphors for white light-emitting diodes
    Li, Junhao
    Yan, Jing
    Wen, Dawei
    Khan, Wasim Ullah
    Shi, Jianxin
    Wu, Mingmei
    Su, Qiang
    Tanner, Peter A.
    JOURNAL OF MATERIALS CHEMISTRY C, 2016, 4 (37) : 8611 - 8623
  • [50] Facile synthesis of Eu2+ activated dual light emitting barium silicate phosphors for warm-white light emitting diodes
    Som, Sudipta
    Kuo, Peng-Hsuan
    Lu, Chung-Hsin
    JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 790 : 1060 - 1064
12345