Abstract
One-dimensional Lu2Si2O7:Ce3+ (LPS:Ce) luminescent fibers were prepared by the sol–gel process combined with electrospinning with polyvinyl butyral as polymer in this study. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, thermogravimetric and differential scanning calorimetry, Fourier transform infrared spectroscopy, photoluminescence, and kinetic decays were used to characterize the resulting samples. After calcinated at 1200 °C, pure crystalline phase of Lu2Si2O7 was obtained with well maintenance of the fiber morphology. The excitation and emission curves of LPS:Ce samples are influenced by cerium-doping concentrations. LPS:0.5%Ce fibers show the most intense emission among the samples. A fast decay time of tens of nanosecond was also observed in LPS:Ce fibers. Furthermore, LPS:0.5%Ce powders and Y co-doped LPS:0.5%Ce fibers were also prepared in a similar way for comparison. As a result, LPS:0.5%Ce fibers present a much stronger emission and higher quantum efficiency than that of LPS:0.5%Ce powders, and a close efficiency compared with Y0.8Lu1.2Si2O7:0.5%Ce fibers. In addition, a facile and efficient fiber molding process can be realized to assemble one-dimensional LPS:Ce fibers into three-dimensional (3D) fibers structures with different shapes like bracelet and spool. Such 3D fiber structures are dense enough and well-shaped even if after high temperature calcination. The high performance LPS:Ce fibers and LPS:Ce 3D fibers may have great potential applications for luminescent clad sensors, optoelectronic devices, or scintillating detectors
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This work was financially supported by the State Key Lab of High Performance Ceramic and Superfine Microstructure, Shanghai Institute of Ceramics (No. O81GS1181G), and National Natural Science Foundation of China (No. 91022028).
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Lu, Q., Liu, Q., Zhuang, J. et al. Ce3+-doped Lu2Si2O7 luminescent fibers derived from electrospinning: facile preparation and flexible fiber molding. J Mater Sci 48, 8471–8482 (2013). https://doi.org/10.1007/s10853-013-7664-3
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DOI: https://doi.org/10.1007/s10853-013-7664-3