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- Title
Electrospun LaOCl:Eu, Ce nanofibers with color-tunable fluorescence between red and orange.
- Authors
Xu, Yuxian; Li, Zhuo; Liu, Xinping; Luo, Yongjin; Qian, Qingrong; Huang, Baoquan; Xiao, Liren; Chen, Qinghua
- Abstract
The color-tunable fluorescent LaOCl:Eu, Ce nanofibers were successfully fabricated via an electrospinning combined with calcination route, in which PVA was employed as a template. XRD, TG-DTG results show that the heat-treatment of the nanofibers at 750 °C is enough to obtain highly crystallized LaOCl:Eu, Ce samples. Scanning electron microscopy analysis indicates that LaOCl:Eu, Ce nanofibers are composed of wafer nanograins with mean diameter of ~30 nm. Photoluminescence analysis shows that the luminescence intensity has changed with the varying Ce doping content in LaOCl:Eu nanofibers. Additionally, CIE chromaticity coordinates of LaOCl:5% Eu, x% Ce nanofibers change from orange light region of (0.4997, 0.4828) and (0.5232, 0.4627) at x = 5.0 and 2.5 to red light region of (0.5661, 0.4251) at x = 1.7, then to orange light region of (0.5590, 0.4318) at x = 1.0, respectively. Hence the fluorescence color of LaOCl:Eu, Ce nanofibers can be tuned by simply adjusting the Eu/Ce ratio, which is a promising candidate for application in LEDs.
- Subjects
ELECTROSPINNING; CERIUM; NANOFIBERS; FLUORESCENCE; LANTHANUM oxide
- Publication
Journal of Materials Science: Materials in Electronics, 2017, Vol 28, Issue 12, p8596
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-017-6583-5