Effect of ligand field symmetry on upconversion luminescence in heat-treated LaBGeO5:Yb3+, Er3+glass

doi:10.1111/jace.15578

	Effect of ligand field symmetry on upconversion luminescence in heat-treated LaBGeO5:Yb3+, Er3+glass
	Ali, Mohamed. A.1,2; Ren, Jinjun 3; Liu, Xiaofeng 1; Qiu, Jianrong 4
刊名	Journal of the American Ceramic Society
	2018
卷号	101 期号:9 页码:4387-4396
ISSN号	00027820
DOI	10.1111/jace.15578
英文摘要	In this paper, we report upconversion (UC) luminescence enhancement in LaBGeO5:Yb3+, Er3+glass-ceramics (GCs), surface crystallized glass-ceramics (SCGCs) and ceramics compared with the as-melt glass fabricated by the conventional melt-quenching technique. Based on structural investigations, we find that the nucleation and crystallization of trigonal stillwellite LaBGeO5:Yb3+, Er3+nanocrystals occur first at the glass surface before the following volume crystallization. The local site symmetry around rare earth (RE) ions which was evaluated using the Eu3+ions as a probe together with Judd-Ofelt theory calculations exhibits a clear increase with the devitrification of the glass. Consequently, complete crystallization of the glass leads to largest enhancement in the UC emissions of the LaBGeO5:Yb3+, Er3+ceramics. We ascribe the enhancement of UC luminescence in the LaBGeO5:Yb3+, Er3+GCs, SCGCs, and ceramics to the structural ordering and the improvement of site symmetry surrounding RE ions that minimizes the rate of nonradiative relaxation process. © 2018 The American Ceramic Society
出版者	Blackwell Publishing Inc.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25351]
专题	中国科学院上海硅酸盐研究所
作者单位	1.School of Materials Science and Engineering, Zhejiang University, Hangzhou, China; 2.Faculty of Science, Department of Physics, Suez University, Suez, Egypt; 3.Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China; 4.State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China
推荐引用方式 GB/T 7714	Ali, Mohamed. A.,Ren, Jinjun,Liu, Xiaofeng,et al. Effect of ligand field symmetry on upconversion luminescence in heat-treated LaBGeO5:Yb3+, Er3+glass[J]. Journal of the American Ceramic Society,2018,101(9):4387-4396.
APA	Ali, Mohamed. A.,Ren, Jinjun,Liu, Xiaofeng,&Qiu, Jianrong.(2018).Effect of ligand field symmetry on upconversion luminescence in heat-treated LaBGeO5:Yb3+, Er3+glass.Journal of the American Ceramic Society,101(9),4387-4396.
MLA	Ali, Mohamed. A.,et al."Effect of ligand field symmetry on upconversion luminescence in heat-treated LaBGeO5:Yb3+, Er3+glass".Journal of the American Ceramic Society 101.9(2018):4387-4396.