Enhancement of luminescence and afterglow in Ca0.8Zn0.2TiO3:Pr3+ by Nb5+ substitution for Ti4+

被引：3

作者：

黄平 ^{[1
]}

武雅乔 ^{[1
]}

崔彩娥 ^{[1
]}

郭瑨 ^{[1
]}

机构：

[1] Department of Physics and Optoelectronics,Taiyuan University of Technology

来源：

JournalofRareEarths | 2012年 / 30卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Ca0.8Zn0.2Ti1–xNbxO3:Pr3+; red long afterglow phosphors; luminescence; solid-state reaction method; rare earths;

D O I：

暂无

中图分类号：

O614.33 [镧系元素（稀土元素）];

学科分类号：

070301 ; 081704 ;

摘要：

Nb5+ doped Ca0.8Zn0.2TiO3:Pr3+ red long afterglow phosphors were synthesized by solid-state reaction methods. X-ray diffraction, photoluminescence spectroscopy and thermally stimulated spectrometry were used to investigate the effects of Nb5+ content on the crystal characteristics and luminescent properties of Ca0.8Zn0.2Ti1-xNbxO3:Pr3+ phosphors. The results showed that the addition of a small quantity of Nb5+ had negligible effect on the crystal characteristics of Ca0.8Zn0.2Ti1-xNbxO3:Pr3+, but it could change the trapping parameters (the depth of trap, frequency factors and the concentration of trapped charges at t=0) of Ca0.8Zn0.2Ti1-xNbxO3:Pr3+ phosphors, and then led to the enhance-ment of red fluorescence and phosphorescence at 612 nm originating from 1D2→3H4 transition of Pr3+. Both of the red fluorescence intensity and afterglow time reached the largest values in the sample of Ca0.8Zn0.2Ti1-xNbxO3:Pr3+ with x=0.05. The afterglow time of Ca0.8Zn0.2Ti0.95Nb0.05O3:Pr3+ phosphors lasted for over 24 min (≥1 mcd/m2) when the excited source was cut off.

引用

页码：100 / 104

页数：5

共 10 条

[1] Doping effects of Nb5+ on red long afterglow phosphor CaTiO3:Pr3+
蒋自强
王育华
龚宇
[J]. Chinese Physics B, 2010, (02) : 488 - 492
[2] Afterglow phosphor materials Y 2 O 2 S: Eu, Mg, Ti doped with various Gd concentrations[J] . Tongkun Ji,Hongyi Jiang,Fei Chen.Journal of Alloys and Compounds . 2010 (1)
[3] Luminescent properties of Pr 3+ doped (Ca, Zn) TiO 3 : Powders and films[J] . Xiaofang Yuan,Xiaobo Shi,Mingrong Shen,Wei Wang,Liang Fang,Fengang Zheng,Xinglong Wu.Journal of Alloys and Compounds . 2009 (1)
[4] Influence of calcination temperature on luminescent properties of Sr 3 Al 2 O 6 :Eu 2+ , Dy 3+ phosphors prepared by sol–gel-combustion processing[J] . Ping Huang,Cai-e Cui,Sen Wang.Optical Materials . 2009 (1)
[5] Long lasting phosphorescence behavior of Pr3+-doped CaTiO3-based oxides
Zhi, Jing
Chen, Ang
Ju, Lu-Kwang
[J]. OPTICAL MATERIALS, 2009, 31 (11) : 1667 - 1672
[6] Improvement of the luminescence properties of CaTiO 3 :Pr obtained by modified solid-state reaction[J] . Rui Chen,Fenglan Song,Donghua Chen,Yuhua Peng.Powder Technology . 2009 (3)
[7] Erratum to ‘‘Enhanced luminescent properties of long-persistent Sr 2 MgSi 2 O 7 :Eu 2+ , Dy 3+ phosphor prepared by the co-precipitation method’’[J. Lumin. 128 (2008) 12][J] . Wen Pan,Guiling Ning,Jing Wang,Yuan Lin,Junwei Ye.Journal of Luminescence . 2008 (5)
[8] Resolution of Eu 2+ asymmetrical emission peak of SrAl 2 O 4 :Eu 2+ , Dy 3+ phosphor by cathodoluminescence measurements[J] . J.M. Ngaruiya,S. Nieuwoudt,O.M. Ntwaeaborwa,J.J. Terblans,H.C. Swart.Materials Letters . 2008 (17)
[9] UV excitation and trapping centers in CaTiO 3 :Pr 3+[J] . W. Jia,D. Jia,T. Rodriguez,D.R. Evans,R.S. Meltzer,W.M. Yen.Journal of Luminescence . 2006
[10] Improvement of the optical performances of Pr 3+ in CaTiO 3[J] . P.T Diallo,K Jeanlouis,P Boutinaud,R Mahiou,J.C Cousseins.Journal of Alloys and Compounds . 2001

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