Electrospinning synthesis and luminescence properties of one-dimensional La9.33(SiO4)6O2: Ln3+ (Ln = Ce, Eu, Tb) microfibers

Abstract

One-dimensional La(9.33)(SiO(4))(6)O(2): Ln(3+) (Ln = Ce, Eu, Tb) microfibers were fabricated by a simple and cost-effective electrospinning method. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), photoluminescence (PL) and low voltage cathodoluminescence (CL) as well as kinetic decay were used to characterize the resulting samples. SEM and TEM results indicated that the diameter of the microfibers annealed at 1000 °C for 3 h was 200-245 nm. The microfibers were further composed of fine and closely linked nanoparticles. La(9.33)(SiO(4))(6)O(2): Ln(3+) (Ln = Ce, Eu, Tb) phosphors showed the characteristic emission of Ce(3+) (5d → 4f), Eu(3+) ((5)D(0)→(7)F(J)) and Tb(3+) ((5)D(3,4)→(7)F(J)) under ultraviolet excitation and low-voltage electron beams (3-5 kV) excitation. An energy transfer from Ce(3+) to Tb(3+) was observed in the La(9.33)(SiO(4))(6)O(2): Ce(3+), Tb(3+) phosphor under ultraviolet excitation and low-voltage electron beam excitation. Luminescence mechanisms were proposed to explain the observed phenomena. Blue, red and green emission can be realized in La(9.33)(SiO(4))(6)O(2): Ln(3+) (Ln = Ce, Eu, Tb) microfibers by changing the doping ions. So the La(9.33)(SiO(4))(6)O(2): Ln(3+) (Ln = Ce, Eu, Tb) phosphors have potential applications in full-color field emission displays.

Rudimental research progress of rare-earth silicate oxyapatites: their identification as a new compound until discovery of their oxygen ion conductivity

“…Furthermore, they succeeded in fabricating a microfiber of Ce, Eu, and Tb-doped La 9.33 (SiO 4 ) 6 O 2 using electrospinning synthesis that has a potential application in field emission displays. 127) After this study, their target materials seem to shift from silicate oxyapatites to phosphate oxyapatites and/or solid solutions of silicate oxyapatite and phosphate oxyapatite.…”

Luminescence properties of rare earth ions doped glasses excited by broadband lights

“…The red emission bands peaking at 591 and 616nm are corresponding to the 5 D 0 → 7 F J (J=1, 2) transition of Eu 3+ [13,14]. In…”

Flexible hollow nanofibers: Novel one-pot electrospinning construction, structure and tunable luminescence–electricity–magnetism trifunctionality

“…This method not only attracts extensive academic investigations, but is also applied in many areas such as filtration [47], luminescent materials [48,49], biological scaffolds [50], electrode materials [51] and nanocables [52]. Recent efforts have been made to improve electrospinning method and setup, and nanofibers with novel structures, such as coresheath, Janus, porous and hollow morphology, can be prepared if appropriate processing parameters are adopted [53][54][55][56][57][58].…”