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A study on the structure, luminescence and thermo-stability of polycrystalline Gd2Si2O7:Ce and (Gd,La)2Si2O7:Ce
Wei, Qinhua1; Shi, Hongsheng1; Zhou, Zhenzhen2; Liu, Guanghui2; Chen, Zhi1; Qin, Laishun1; Shu, Kangying1; Liu, Qian2
2017
发表期刊Journal of Materials Chemistry C
ISSN20507534
卷号5期号:6页码:1443-1451
摘要Gd2Si2O7:Ce (GPS:Ce) and (Gd,La)2Si2O7:Ce (La-GPS:Ce) phosphors with different crystal structures, tetragonal, orthorhombic and triclinic, were synthesized via a sol-gel technique. The prepared samples have been systematically investigated using room temperature (RT) XRD, high temperature (HT) XRD, HRTEM, selected area electron diffraction (SAED) and EDS elemental analysis. The results show that the phase transition occurred at 1350-1450 °C and the tetragonal phase was a low-temperature metastable phase and the orthorhombic and triclinic structures were stable at high temperatures. It was observed that the three structures display completely different luminescence efficiencies under both UV lamp and X-ray excitation, but the decay time was not strongly dependent on the crystal structure. The luminescence thermo-stability and activation energy were also measured and calculated. The results indicate that the thermo-stability was strongly dependent on the crystal structure and the GPS:Ce-1500 °C sample showed the best thermo-stability. The three materials have potential application as a novel type of scintillator. © The Royal Society of Chemistry.
DOI10.1039/c6tc04484k
EI入藏号20170703347184
EI主题词Crystal structure
EI分类号641.1 Thermodynamics - 741.1 Light/Optics - 804 Chemical Products Generally - 933.1.1 Crystal Lattice
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25820
专题中国科学院上海硅酸盐研究所
作者单位1.College of Materials Science & Engineering, China Jiliang University, Hangzhou; 310018, China;
2.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
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GB/T 7714
Wei, Qinhua,Shi, Hongsheng,Zhou, Zhenzhen,et al. A study on the structure, luminescence and thermo-stability of polycrystalline Gd2Si2O7:Ce and (Gd,La)2Si2O7:Ce[J]. Journal of Materials Chemistry C,2017,5(6):1443-1451.
APA Wei, Qinhua.,Shi, Hongsheng.,Zhou, Zhenzhen.,Liu, Guanghui.,Chen, Zhi.,...&Liu, Qian.(2017).A study on the structure, luminescence and thermo-stability of polycrystalline Gd2Si2O7:Ce and (Gd,La)2Si2O7:Ce.Journal of Materials Chemistry C,5(6),1443-1451.
MLA Wei, Qinhua,et al."A study on the structure, luminescence and thermo-stability of polycrystalline Gd2Si2O7:Ce and (Gd,La)2Si2O7:Ce".Journal of Materials Chemistry C 5.6(2017):1443-1451.
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