Preparation and luminescence properties of a white emitting long afterglow luminous fiber based on FRET

A ternary luminous fiber with white light emitting was prepared. The fiber combined emission from Sr2ZnSi2O7:Eu2+,Dy3+, SrAl2O4:Eu2+,Dy3+ and Rhodamine B in the ternary system. According to fluorescence resonance energy transfer (FRET), Rhodamine B was applied to generate red emission. A novel FRET system among Sr2ZnSi2O7:Eu2+,Dy3+, SrAl2O4:Eu2+,Dy3+ and Rhodamine B was introduced. The anticipated luminescence properties could be realized precisely by adjusting the ratio. The summaries of the main test results such as X-ray diffraction, CIE chromaticity diagram and fluorescence spectrophotometer were given, and an afterglow brightness tester was used as a microcomputer thermo-luminescent dosimeter. The brief outlines about some phenomena aspects and detailed physical descriptions as well as manuals were available. From the XRD analysis the result suggested that the lattice structure was not destroyed when milling and spinning. The sample of 6:4:0.1 with white light emitting showed good physical, mechanical and luminous performance.

Graphical AbstractSEM and fluorescence microscope images of luminous fiber (a), (b) and (c) SEM photograph of the suface of 6:4:0.1; (d) Sr2ZnSi2O7:Eu2+,Dy3+; (e) SrAl2O4:Eu2+,Dy3+; (f) 4:6:0.2 show the surface of luminous fiber as well as show the luminous fiber which was excited by 365 nm (Images directory))Figure optionsDownload as PowerPoint slide