The Thermal Stability of Ce0.67Tb0.33MgAl11O19 by SiO2-Coatingin Sol-Gel Processing

Ling He; Rui Ling; Wei Ming Sun; Wen Sheng Li; Qi Zheng Dong

doi:10.4028/www.scientific.net/AMM.618.220

Paper Titles

Preparation and Photocatalytic Activity of Gold Nanoparticles (AuNPs)/ZnFe₂O₄
p.198

In Situ Reducing Synthesis of (CTAB+C₁₈NH₂)-Modified Hydrophobic Gold Nanoparticles at Room Temperature
p.203

UV-Fenton Discoloration of Methyl Orange Using Fe₃O₄/MWCNTs as Heterogeneous Catalyst Obtained by an In Situ Strategy
p.208

Pyrolytic Synthesis of Bifunctional g-C₃N₄ Derived from Melamine
p.215

The Thermal Stability of Ce_0.67Tb_0.33MgAl₁₁O₁₉ by SiO₂-Coatingin Sol-Gel Processing
p.220

Characterization of Metallo-porphine Monolayer and Bilayer on Ag(111): Screening of Substrate Effects
p.225

Effect of Ball Grinding Time on the Particle Sizes of Tourmaline to the Release Ability of Negative Ions
p.233

Polymetallic Catalysts for the Process of Hydrogenation of Nitrocompounds
p.238

Preparation of Liquid Fuels from Chark Chemical Tar
p.243

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 618The Thermal Stability of Ce0.67Tb0.33MgAl11O19 by...

The Thermal Stability of Ce_0.67Tb_0.33MgAl₁₁O₁₉ by SiO₂-Coatingin Sol-Gel Processing

Abstract:

SiO₂-coated phosphors of Ce_0.67Tb_0.33MgAl₁₁O₁₉ (CTMA) were prepared by the sol–gel method in order to enhance thermal stabilities. The phase structures, microstructures and luminescence properties were studied by the X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscope (TEM) and fluorescence spectrometer respectively. The emission intensity of SiO₂-coated Ce_0.67Tb_0.33MgAl₁₁O₁₉ phosphor was little lower than uncoated phosphor. After baked at 600°Cfor 6h, the coated CTMA showed good thermal stabilities. The luminance performance of SiO₂-coated phosphor is 93% compared with the unbaked CTMA, which is improved 10% in contrast to uncoated.

You might also be interested in these eBooks

Materials, Machines and Development of Technologies for Industrial Production

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 618)

Pages:

220-224

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.618.220

Citation:

Cite this paper

Online since:

August 2014

Authors:

Ling He*, Rui Ling, Wei Ming Sun, Wen Sheng Li, Qi Zheng Dong

Keywords:

Ce_0.67Tb_0.33MgAl₁₁O₁₉, Coating, Luminescence, Phosphor

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Junying Zhang, Zhongtai Zhang, Zilong Tang, etal. Mn2+ luminescence in (Ce, Tb)MgAl11O19 phosphor, Materials Chemistry and Physics, 72(2001) 81-84.

DOI: 10.1016/s0254-0584(01)00301-7

Google Scholar

[2] FENG Zongyu, ZHUANG Weidong, HUANG Xiaowei, et al. Effect of MgF2-H3BO3 flux on the properties of (Ce, Tb)MgAl11O19 phosphor, Rare Earth Materials, 28(2010)351-354.

DOI: 10.1016/s1002-0721(09)60110-1

Google Scholar

[3] S. K. Hong, D. S. Jung, S. H. Ju, et al. The Effect of flux types on the formation of green light emitting phosphor particles with spherical shape and filled morphology. Mater Electron, 17(2006) 342-346.

DOI: 10.1007/s10854-006-7467-2

Google Scholar

[4] Wang Xiaojun, Yang Hua, etal. Luminescent properties of BaMgAl10O17Eu2+phosphors modified with MgF2. Chinese Journal of Luminescence, 26(2005) 1-5.

Google Scholar

[5] Yang Qian, QiuKehui, Zhao Kun, et al. Study on SiO2 surface coating of YAG：Ce3+phosphor using for LED. New Chemical Matericals, 39(2011) 100-104.

Google Scholar

[6] Guo C, Chu B, Wu M, Su Q. Oxide coating for alkaline earth sulphide basedPhosphor. J Lumin, 105(2003) 1-6.

Google Scholar

[7] Xue L, Kajiyoshi K, Sasaoka H, Nishimura K. et al. Preparation of uniform titanianano-coating on ZnS-based phosphors by a sol-gel process. Thin Solid Films, 516(2008)3-8.

DOI: 10.1016/j.tsf.2007.09.003

Google Scholar

[8] Do H-S, Kim E-J, Hong S-H. et al. Improved moisture resistance of SrS: Eu2+ phosphors with nanoscale SiO2 coating. J Lumin, 130(2010) 1400-3.

DOI: 10.1016/j.jlumin.2010.03.001

Google Scholar

[9] Avci N, Cimieri I, Smet PF, et al. Stability improvement of moisture sensitive CaS: Eu2+ micro-particles by coating with sol-gel alumina. Opt Mater, 33(2011)2-5.

DOI: 10.1016/j.optmat.2010.07.021

Google Scholar

[10] A. Potdevin, G. Chadeyrona, V. Briois. et al. Structural, morphological and scintillation properties of Ce3+-doped Y3Al5O12 powders and films elaborated by the sol-gel process. Materials Chemistry and Physics, 130(2011) 500-506.

DOI: 10.1016/j.matchemphys.2011.07.019

Google Scholar

[11] GuangzhiLi , Songyan Liu , Zhensheng Chu. et al. Synthesis and photoluminescence of core–shell structured spherical SiO2YPO4: Tb3+ phosphors viasol–gelprocess. Journal of Luminescence 132(2012) 2961-2967.

DOI: 10.1016/j.jlumin.2012.06.015

Google Scholar

[12] Yanjie Liang, Jun Ouyang, Hongyou Wang. etal. Synthesis and characterization of core–shell structured SiO2YVO4: Yb3+, Er3+ microspheres. Applied Surface Science 258(2012) 3689-3694.

DOI: 10.1016/j.apsusc.2011.12.006

Google Scholar