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- Title
Electrospinning preparation and luminescence properties of one-dimensional SrWO: Sm nanofibers.
- Authors
Xu, Xuetao; Zhao, Suqing; Liang, Kanyi; Zeng, Jiaying
- Abstract
One-dimensional Sm doped SrWO with or without different charge compensation approaches (co-doping Li, Na and K) nanofibers were prepared by electrospinning. The structure, morphology and luminescence properties of the obtained nanofiber phosphors were investigated. The X-ray diffraction, Fourier transformation infrared and thermogravimetric results show that the SrWO: Sm samples crystallize at 700 °C. Scanning electron microscope results indicate that as prepared nanofibers before/after calcination present uniform fiberlike morphology. The luminescence results show that SrWO: Sm phosphors can be excited efficiently by ultraviolet (UV) and near-UV light. The emission spectrum consists of three emission peaks at 561, 596 and 643 nm, corresponding to G → H, G → H and G → H transitions of Sm, respectively. The optimal doping concentration of Sm in SrWO is experimentally ascertained to be 4 mol%. The introduction of charge compensator R (R = Li, Na and K) can enhance the emission intensity of phosphors significantly. The co-doping of Li has the best compensation effect. The present investigation indicates that Sm doped SrWO is a promising orange phosphor for light-emitting diode based on UV chip technology.
- Subjects
STRONTIUM compounds; SAMARIUM; ELECTROSPINNING; LUMINESCENCE; NANOFIBERS; PHOSPHORS
- Publication
Journal of Materials Science: Materials in Electronics, 2014, Vol 25, Issue 8, p3324
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-014-2021-0