Long-Lasting Phosphorescence in BaSi2O2N2:Eu2+ and Ba2SiO4:Eu2+ Phases for X-Ray and Cathode Ray Tubes
Document Type
Article
Publication Date
2010
Publication Title
Journal of the Electrochemical Society
DOI
10.1149/1.3267513
Abstract
We report the long-lasting bluish-green phosphorescence for X-ray or cathode ray tubes in the phosphors with compositions of either Ba2SiO4:0.01Eu2+–xSi3N4 (x=0–1) or 2BaCO3–ySi3N4:0.01Eu2+(y=1/6–1) synthesized by a solid-state reaction. By tuning the Si3N4content, the phosphorescence may originate from Eu2+ in BaSi2O2N2(peaking at 490 nm), Ba2SiO4 (505 nm), and Ba3SiO5 (590 nm) phases. The strong phosphorescence of the Ba2SiO4:Eu2+ phase in 2BaCO3–ySi3N4:0.01Eu2+ is attributed to N substitution for O to generate a shallow trap. In Ba2SiO4:0.01Eu2+–xSi3N4 , however, N prefers reacting with Ba2SiO4 to form BaSi2O2N2 , thereby exhibiting a strong phosphorescence of the BaSi2O2N2:Eu2+ phase but a weak phosphorescence of the Ba2SiO4:Eu2+ phase.
Recommended Citation
Wang, Meiyuan, Xia Zhang, Zhendong Hao, Xinguang Ren, Yongshi Luo, Haifeng Zhao, Xiao-Jun Wang, Jiahua Zhang.
2010.
"Long-Lasting Phosphorescence in BaSi2O2N2:Eu2+ and Ba2SiO4:Eu2+ Phases for X-Ray and Cathode Ray Tubes."
Journal of the Electrochemical Society, 157 (2): H178-H181: IOP Publishing.
doi: 10.1149/1.3267513
https://digitalcommons.georgiasouthern.edu/physics-facpubs/71
Copyright
Authors retain the right, after publication by ECS, to use all or part of the Article without revision or modification, including the ECS-formatted version, in print compilations or other print publications of the author(s)’ and/or the employer’s own works, and on the author(s)’ and/or the employer’s website. article obtained from the Journal of the Electrochemical Society.
