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Published in:
26-03-2018
A facile method to prepare the white persistent luminescent fibers based on Sr2ZnSi2O7Eu2+, Dy3+ and fluorescence pigments
Published in: Journal of Materials Science: Materials in Electronics | Issue 11/2018
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Abstract
The polyacrylonitrile composite fibers with white persistent luminescence were prepared by adding different concentrations of Sr2ZnSi2O7: Eu2+, Dy3+ (SZO) and Rhodamine B fluorescent pigments (FP) into polyacrylonitrile spinning solution. Morphology, phase structure, color properties, photoluminescence properties and afterglow properties were examined. Photoluminescence test indicated that the emission spectrum of Sr2ZnSi2O7: Eu2+, Dy3+ phosphors overlapped with the excitation spectrum of fluorescent pigments in the range of 450–550 nm, which was the necessary condition for the energy transfer from the Sr2ZnSi2O7: Eu2+, Dy3+ to the Rhodamine B fluorescent pigments (FP). The phosphorescent color of the composite fibers showed that the white luminescent polyacrylonitrile fibers can be gained when weight ratios of SZO/FP ranged from 10:0.2 to 10:0.5. Decay curves suggested that the as weight ratio of SZO/FP was less than 10:0.75, the initial brightness of the composite fibers could not be significantly reduced.