The PL intensity of Dy 3+ and Sm 3+ increases with raising the annealing temperature and the number of coating cycles. The core–shell particles show strong characteristic emission from Dy 3+ for SiO 4:Dy 3+ and from Sm 3+ for SiO 4:Sm 3+ due to an efficient energy transfer from YVO 4 host to them. In this work, a novel core-shell and inorganic-organic hybridization strategy has been employed to fabricate Eu 3+-doped YVO 4 nanoparticles to broaden their photoluminescence excitation spectral bandwidth to the range of 230-415 nm, covering the entire ultraviolet spectrum of solar light and enabling their potential applications in silicon solar cells. The nanocomposites have the advantage of high magnetic responsive and unique luminescence properties. X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy were used to characterize the heteronanostructures.
#Yvo4 yvo4 core shell series
The thickness of shells could be easily controlled by changing the number of deposition cycles (20 nm for one deposition cycle). A series of coreshell bifunctional magneticoptical YVO 4 :Ln 3+ Fe 3 O 4 (Ln 3+ Eu 3+ or Dy 3+ ) nanocomposites have been successfully synthesized via two-step method. Novel YVO 4 :Eu 3+ /YBO 3 core/shell heteronanostructures with different shell ratios (SRs) were successfully prepared by a facile two-step method. We also demonstrate the synthesis of a crystalline YVO4:YbVO4 layered material by ALD to verify the possibility of creating artificial coreshell type. 300 nm), smooth surface and non-agglomeration. of YVO4:Eu3+ Nanoparticles via a Novel Core-Shell and Hybridization Approach. The obtained core–shell phosphors have perfect spherical shape with narrow size distribution (average size ca. Photoluminescence Spectroscopy of YVO4:Eu3+ Nanoparticles With Aromatic. coreshell particles for DSSC, fabricated via a solgel method 67. They were readily formed by hydrothermal epitaxial growth of YPO4 onto YVO4:Eu3+nanocrystals because YPO4 and YVO4 have the same crystal structure and similar lattice parameters. Al5O12 O3 22.2.2.3 YVO4 YVO4 is one of the most favorable host material candidates. X-ray diffraction (XRD), Fourier-transform IR spectroscopy, field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), photoluminescence (PL) spectra as well as lifetimes were used to characterize the resulting SiO 4:Dy 3+/Sm 3+ core–shell phosphors. Novel YVO4:Eu3+YPO4 core/shell heteronanostructures with enhanced photoluminescence (PL) are proposed in this paper. Spherical SiO 2 particles have been coated with YVO 4:Dy 3+/Sm 3+ phosphor layers by a Pechini sol–gel process, leading to the formation of core–shell structured SiO 4:Dy 3+/Sm 3+ particles.
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