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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 PublicationOPTICAL MATERIALS
ISSN0925-3467
Volume94Pages:299
SubtypeArticle
AbstractCrystallized 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+.
KeywordGadolinium oxysulfide Gd2O2S:Tb Scintillation ceramics Nanopowders
DOI10.1016/j.optmat.2019.05.022
Language英语
WOS Research AreaMaterials Science ; Optics
PublisherELSEVIER
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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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