![]() It is also shown that surface loss processes are the reason of the degradation of energy transfer efficiency from the host lattice to Eu 3+ under high-energy excitations in vacuum ultraviolet spectral range. Comparing the luminescence processes of YVO4:Eu and core-shell YVO4YF3 nanocrystals with bulk-YVO4:Eu. Synthesis and photoluminescence properties of coreshell structured YVO4:Eu3+SiO2 nanocomposites Liu, Lina Xiao, Hongyu An, Xiuyun Zhang, Yongsheng. of YVO4:Eu3+ Nanoparticles via a Novel Core-Shell and Hybridization Approach. It is demonstrated that the Eu 3+ luminescence recovery is achieved at the expense of the suppression of the intrinsic emission but not due to the passivation of surface loss centers in core-shelled nanocrystals. Photoluminescence Spectroscopy of YVO4:Eu3+ Nanoparticles With Aromatic. A YF 3 core-shell layer around YVO 4:Eu nanoparticles partially recovers the intensity of the Eu 3+ emission. The results show noticeable differences between bulk and nanocrystalline YVO 4:Eu in photoluminescence experimental data, which explains by influence of the nanocrystal surface. Alghamdi, Yonghui Deng Source: Journal of colloid and interface science 2022 v.605 pp. This asymmetric environment can be used to see amount of Eu3+ ions present in Y3+ sites. A facile construction of bifunctional core-shell magnetic fluorescent Fe3O4YVO4:Eu3+ microspheres for latent fingerprint detection Author: Panpan Pan, Tong Zhang, Bingjie Yu, Rongliang Ma, Qin Yue, Abdulaziz A. When Eu3+ ions occupy Y3+ sites, Eu3+ ions are surrounded by eight O2 ions, which is highly asymmetric (D 2d ). Magnetization-induced enhancement of photoluminescence in core-shell CoFe2O4YVO4:Eu3+ composite. ![]() Nanocrystalline YVO 4:Eu samples – both as-prepared and YF 3 core-shelled – have been synthesized by means of a microwave-assisted synthesis in ionic liquids, which allows to obtain 10–12nm nanoparticles with high crystallinity. Synergistically bridging the phosphors Y2O3:Eu3+ (as an inner core) and YVO4:Eu3+ (as an outer core) by amorphous SiO2, i.e. Abstract Eu3+ doped in core and shell (YVO4:SiO2) nanoparticles show luminescence peaks corresponding to magnetic and electric dipole transitions of Eu3+. Comparative analysis of bulk, non-coated and core-shelled nanocrystalline YVO 4:Eu was performed by means of time-resolved luminescence and VUV excitation luminescence spectroscopy techniques. ![]()
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