Synthesis and luminescence of high-brightness Gd sub(2)O sub(2)SO sub(4):Tb super(3+) nanopieces and the enhanced luminescence by alkali metal ions co-doping

Gd sub(2)O sub(2)SO sub(4):Tb super(3+) nanopieces were synthesized by a combined approach of electrospinning and calcination at 1000 degree C in mixed gas of sulfur dioxide and air. The nanopieces excited by a 230 nm light showed excellent green luminescence with the strongest emission peak at 545...

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Bibliographic Details
Published in:Journal of luminescence 2014-06, Vol.150, p.50-54
Main Authors: Song, Lixin, Du, Pingfan, Jiang, Qinxu, Cao, Houbao, Xiong, Jie
Format: Article
Language:English
Subjects:
Alkali metals
Doping
Emission
Luminescence
Nanostructure
Optimization
Sulfur dioxide
Synthesis
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Summary:Gd sub(2)O sub(2)SO sub(4):Tb super(3+) nanopieces were synthesized by a combined approach of electrospinning and calcination at 1000 degree C in mixed gas of sulfur dioxide and air. The nanopieces excited by a 230 nm light showed excellent green luminescence with the strongest emission peak at 545 nm due to the super(5)D sub(4) arrow right super(7)F sub(5) transition of Tb super(3+). Interestingly, the intensity of emission peak at 545 nm of Gd sub(2)O sub(2)SO sub(4):Tb super(3+) nanopieces exhibited about two times stronger than that of the bulk Gd sub(2)O sub(2)SO sub(4):Tb super(3+) at the same doping concentrations of Tb super(3+). Besides, the effects of alkali metal ions doping on the luminescence of the nanopieces have been examined. The emission intensities were further enhanced by alkali metal ions doping, especially for Gd sub(2)O sub(2)SO sub(4):Tb super(3+)/Li super(+). The optimal doping concentration of Li super(+) was 7%.
ISSN:0022-2313
DOI:10.1016/j.jlumin.2014.01.043