Luminescent properties of long lasting phosphor Ca2MgSi2O7:Eu2+

被引：33

作者：

Gong, Yu ^{[1
]}

Wang, Yuhua ^{[1
,2
]}

Jiang, Ziqiang ^{[1
]}

Xu, Xuhui ^{[1
]}

Li, Yanqin ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Phys Sci & Technol, Dept Mat Sci, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2009年 / 44卷 / 09期

关键词：

Inorganic compounds; Optical properties; Defects; EARTH IONS; EU2+; DY3+; MECHANISM; PHASES; SRAL2O4; ENERGY; EU-2+;

D O I：

10.1016/j.materresbull.2009.05.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Long after glow phosphors (Ca1-xEux)(2)MgSi2O7 (0.002 <= x <= 0.02) were prepared by solid-state reactions under a weak reductive atmosphere. X-ray diffraction pattern, photoluminescence spectra, decay curve, afterglow spectra and thermoluminescence curves were investigated. The phosphors showed two emission peaks when they were excited by 343 nm, due to two types of Eu2+ centers existing in the Ca2MgSi2O7 lattice. However, only one emission peak can be found in their afterglow spectra. Energy transfer between Eu2+ ions in inequivalent sites was found. A possible mechanism was presented and discussed. The afterglow decay time of Ca1.998MgSi2O7:Eu-0.002 was nearly 12.5 h which means it was a good long lasting phosphor. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1916 / 1919

页数：4

共 30 条

[21] Combustion synthesis and photoluminescence of SrAl2O4:Eu,Dy phosphor nanoparticles [J].

Peng, TY ;

Yang, HP ;

Pu, XL ;

Hu, B ;

Jiang, ZC ;

Yan, CH .

MATERIALS LETTERS, 2004, 58 (3-4) :352-356

[22] Luminescence of Eu2+- in silicate host lattices with alkaline earth ions in a row [J].

Poort, SHM ;

Reijnhoudt, HM ;

vanderKuip, HOT ;

Blasse, G .

JOURNAL OF ALLOYS AND COMPOUNDS, 1996, 241 (1-2) :75-81

[23] Long lasting phosphorescence in Eu2+-doped calcium aluminoborate glasses [J].

Qiu, JR ;

Hirao, K .

SOLID STATE COMMUNICATIONS, 1998, 106 (12) :795-798

[24] SOME NEW COMPLEX SILICATE PHOSPHORS CONTAINING CALCIUM, MAGNESIUM, AND BERYLLIUM [J].

SMITH, AL .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1949, 96 (05) :287-296

[25]

VANUITERT LG, 1984, J LUMIN, V29, P1, DOI 10.1016/0022-2313(84)90036-X

[26] Radiative and nonradiative decay processes responsible for long-lasting phosphorescence of Eu2+-doped barium silicates -: art. no. 205102 [J].

Yamaga, M ;

Masui, Y ;

Sakuta, S .

PHYSICAL REVIEW B, 2005, 71 (20)

[27] Mechanism of long-lasting phosphorescence process of Ce3+-doped Ca2Al2SiO7 melilite crystals -: art. no. 235108 [J].

Yamaga, M ;

Tanii, Y ;

Kodama, N ;

Takahashi, T ;

Honda, M .

PHYSICAL REVIEW B, 2002, 65 (23) :2351081-23510811

[28] Mechanism of long phosphorescence of SrAl2O4:Eu2+, Dy3+ and CaAl2O4:Eu2+, Nd3+ [J].

Yamamoto, H ;

Matsuzawa, T .

JOURNAL OF LUMINESCENCE, 1997, 72-4 :287-289

[29] The influence of some processing conditions on luminescence of SrAl2O4:Eu2+ nanoparticles produced by combustion method [J].

Yu, XB ;

Zhou, CL ;

He, XH ;

Peng, ZF ;

Yang, SP .

MATERIALS LETTERS, 2004, 58 (06) :1087-1091

[30] Luminescence of SrGdGa3O7:RE3+ (RE = Eu, Tb) phosphors and energy transfer from Gd3+ to RE3+ [J].

Zhang, XM ;

Zhang, JH ;

Liang, LF ;

Qiang, S .

MATERIALS RESEARCH BULLETIN, 2005, 40 (02) :281-288

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