DocumentCode
1517846
Title
Luminescent Properties of 
Phosphors Codoped With Li Ions
Author
Jia, Lingchun ; Gu, Mu ; Liu, Xiaolin ; Huang, Shiming ; Liu, Bo ; Ni, Chen
Author_Institution
Dept. of Phys., Tongji Univ., Shanghai, China
Volume
57
Issue
3
fYear
2010
fDate
6/1/2010 12:00:00 AM
Firstpage
1268
Lastpage
1271
Abstract
LSO:Cex, Liy (x = 0.002-0.016 and y = 0.01-0.08) phosphors were prepared by Pechini sol-gel chemistry, and the influence of Li+ ions on luminescence properties of LSO:Ce phosphors was discussed. It was exhibited that the optimal doping concentrations were at x = 0.006 and y = 0.02, and the crystallization temperature of pure LSO phase was reduced distinctly by Li+ codoping. It was found that photoluminescence intensity of LSO:Ce0.006 > Li0.02 phosphors was increased by factors of 2.2 in comparison to that of LSO:Ce0.006 phosphors. Enhanced luminescence was regarded as the result of alteration of crystal field surrounding Ce3+ activator. Moreover, the energy transfer from Ce2 to Cel centers was induced by Li+ codoping.
Keywords
cerium; crystallisation; lithium; lutetium compounds; phosphors; photoluminescence; silicon compounds; sol-gel processing; Lu2SiO5:Ce; Lu2SiO5:Li; Pechini sol-gel chemistry; crystal field; crystallization temperature; energy transfer; luminescence properties; luminescent properties; optimal doping concentrations; phosphors; photoluminescence intensity; pure LSO phase; Chemistry; Crystal microstructure; Crystalline materials; Crystallization; Crystallography; Doping; Luminescence; Phosphors; Photoluminescence; Temperature; ${rm Li}^{+}$ codopant; ${rm Lu}_{2}{rm SiO}_{5}{hbox{:}}{rm Ce}$
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/TNS.2009.2036364
Filename
5485141
Link To Document