Gd2O2S:Tb scintillation ceramics fabricated from high sinterability nanopowders via hydrogen reduction

doi:10.1016/j.optmat.2019.05.022

SIC OpenIR

	Gd2O2S:Tb scintillation ceramics fabricated from high sinterability nanopowders via hydrogen reduction
	Liu, Qiang; Pan, Hongming; Chen, Xiaopu; Li, Xiaoying; Liu, Xin; Li, Wei; Hu, Zewang; Zhang, Xing; Wu, Lexiang; Li, Jiang
	2019-08-01
Source Publication	OPTICAL MATERIALS
ISSN	0925-3467
Volume	94 Pages:299
Subtype	Article
Abstract	Crystallized Gd-2(OH)(4)SO4 center dot nH(2)O precursor was synthesized in hot water bath using oxide powders and concentrated sulfuric acid as raw materials. Calcining the precursor in air produced the intermediate product Gd2O2SO4 and Gd2O2S powders with high phase purity was obtained by hydrogen reduction. The Gd2O2S powders showed layered structure and severe agglomeration with S-BET = 6.321 m(2)/g. Using this powders, a two-step sintering method comprised of pre-sintering in vacuum and hot isostatic pressing post-treatment was introduced for the fabrication of Gd2O2S:Tb ceramics. The relative density increased from 95.7% in pre-sintered body to 99.2% in final ceramics. Densification processes and chemical homogeneity of the ceramics were discussed. Photoluminescence and X-ray excited luminescence of the final ceramics demonstrated a bright green emission centered at 545 nm due to the D-5(4)-F-7(5) transition of Tb3+.
Keyword	Gadolinium oxysulfide Gd2O2S:Tb Scintillation ceramics Nanopowders
DOI	10.1016/j.optmat.2019.05.022
Language	英语
WOS Research Area	Materials Science ; Optics
Publisher	ELSEVIER
Citation statistics	Cited Times:4[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/26922
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Liu, Qiang,Pan, Hongming,Chen, Xiaopu,et al. Gd2O2S:Tb scintillation ceramics fabricated from high sinterability nanopowders via hydrogen reduction[J]. OPTICAL MATERIALS,2019,94:299.
APA	Liu, Qiang.,Pan, Hongming.,Chen, Xiaopu.,Li, Xiaoying.,Liu, Xin.,...&Li, Jiang.(2019).Gd2O2S:Tb scintillation ceramics fabricated from high sinterability nanopowders via hydrogen reduction.OPTICAL MATERIALS,94,299.
MLA	Liu, Qiang,et al."Gd2O2S:Tb scintillation ceramics fabricated from high sinterability nanopowders via hydrogen reduction".OPTICAL MATERIALS 94(2019):299.

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