The Journal of Physical Chemistry C 2018, 122 Nanoscale Chemical Degradation Mechanisms of Sulfate Attack in Alkali-activated Slag. Full Color Luminescence Tuning in Bi3+/Eu3+-Doped LiCa3MgV3O12 Garnet Phosphors Based on Local Lattice Distortion and Multiple Energy Transfers. Peipei Dang, Sisi Liang, Guogang Li, Yi Wei, Ziyong Cheng, Hongzhou Lian, Mengmeng Shang, Abdulaziz A.This article is cited by 478 publications. The PL intensity of Eu 3+ increases with raising the annealing temperature and the number of coating cycles, and optimum polyethylene glycol concentration in the precursor solution was determined to be 0.08 g/mL for obtaining the strongest emission of Eu 3+. The energy transfer process was further studied by the time-resolved emission spectra as well as kinetic decay curves of Eu 3+ upon excitation into the VO 4 3 - ion. The Eu 3+ shows a strong photoluminescence (PL) (dominated by 5D 0− 7F 2 red emission at 617 nm) due to an efficient energy transfer from vanadate groups to Eu 3+. The thickness of the YVO 4:Eu 3+ shells on SiO 2 cores could be easily tailored by varying the number of deposition cycles (60 nm for two deposition cycles). 500 nm), nonagglomeration, and smooth surface. The obtained core−shell phosphors have perfect spherical shape with narrow size distribution (average size ca. The XRD results demonstrate that the YVO 4:Eu 3+ layers begin to crystallize on the SiO 2 particles after annealing at 400 ☌, and the crystallinity increases with raising the annealing temperature. The resulted YVO 4:Eu 2 core−shell phosphors were characterized by X-ray diffraction (XRD), Fourier-transform IR spectroscopy, scanning electron microscopy, X-ray photoelectron spectra, transmission electron microscopy, UV/vis absorption spectra, general and time-resolved photoluminescence spectra, as well as kinetic decays. Spherical SiO 2 particles have been successfully coated with YVO 4:Eu 3+ phosphor layers through a Pechini sol−gel process.
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