Journal
JOURNAL OF LUMINESCENCE
Volume 150, Issue -, Pages 50-54Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2014.01.043
Keywords
Gd2O2SO4:Tb3+; Alkali metal ions; Nanopieces; Electrospinning; Photoluminescence
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Funding
- Top Priority Discipline of Textile Science and Engineering of Zhejiang Province [2013YBPY06]
- International S&T Cooperation Projects of Zhejiang Province [2012C24012]
- Program for Zhejiang Leading Team of Science and Technology Innovation [2011R50003]
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Gd2O2SO4:Tb3+ nanopieces were synthesized by a combined approach of electrospinning and calcination at 1000 degrees 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 D-5(4) -> F-7(5) transition of Tb3+. Interestingly, the intensity of emission peak at 545 nm of Gd2O2SO4:Tb3+ nanopieces exhibited about two times stronger than that of the bulk Gd2O2SO4:Tb3+ at the same doping concentrations of Tb3+. 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 Gd2O2SO4:Tb3+/Li+. The optimal doping concentration of Li (+) was 7%. (C) 2014 Elsevier B.V. All rights reserved.
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