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Showing 1 to 9 of 9 for “"NaYF4"”.
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Upconversion luminescence in Er-codoped NaYF4 nanoparticles
… lanthanides doped sodium yttrium fluoride (NaYF4) represents an exciting class of upconversion nanomaterials (UCNM) which are suitable to bring forward developments in biomedicine and -biodetection. Despite the fact that among various fluoride based upconversion (UC) phosphors lanthanide …
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Upconversion quantum yield and luminescence of beta-NaYF4:Yb3+,Er3+ nanoparticles
… system based on a transparent host lattice beta-NaYF4, which was doped with trivalent ytterbium ions (Yb3+), acting as absorber/antenna, and trivalent erbium ions (Er3+), acting as emitter. The suppression of radiationless deactivation processes via the particle surface presents a major challenge …
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Effects of size and surface on optical properties of NaYF4:Yb,Er Nanoparticles
… of size and surface on optical properties of hcp NaYF4:Yb,Er particles, which is one of the most efficient near infrared-to-visible UC materials. Room temperature emission spectra showed that for hcp NaYF4:Yb,Er nanoparticles with sizes from ~ 11 to 110 nm, the green intensity increased by 69 …
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Upconversion Phosphors for Efficient Solar Energy Harvesting
… study investigates the emission properties of NaYF4:Yb0.20, Tm/Er0.005, NaBiF4:Yb0.20, Tm(0.005,0.02) and NaBiF4:Yb0.18 - 0.20, Er0.005 - 0.04 powders for upconversion of 980nm radiation to UV-Visible emissions. NaYF4:Yb, Tm/Er upconverters were prepared via hydrothermal synthesis where the …
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FLEXIBLE GEL IMPLANT LOADED WITH PERSISTENT LUMINESCE NANOPARTICLES FOR PHOTOTHERAPY IN DEEP TISSUES
… luminescence by coating PLNPs with an inert NaYF4 shell and pre-investigates their biocompatibility and loading into epoxy resin or PDMS for clinical applications. Insights from this study enable effective deep-seated phototherapy for diseases in deep tissues.
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Synthesis of hybrid metalorganic/inorganic systems and doped halide thin films for photovoltaics
… made of lanthanide doped fluorides (CaF2, NaYF4, NaGdF4, KYF4 and YOF) have been synthetized using MOCVD and sol-gel methods and deeply studied for their potential integration in silicon solar cells. Together with the traditional silicon PV technology, a new class of PV materials, based on …
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Optoperforation of Intact Plant Cells, Spectral Characterization of Alloy Disorder in InAsP Alloy Disorder in InAsP Alloys, and Bimetallic Concentric Surfaces for Metal-Enhanced Fluorescence in Upconverting Nanocrystals
… metal-enhanced fluorescence in upconverting NaYF4:Yb,Er nanocrystals, two nanocomposite architectures were proposed that retrofit metallic nanoshells to these lanthanide-doped nanocrystals. The typical monometallic construction was rejected in favor of architectures featuring Au-Ag bimetallic …
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Surface conjugation of upconversion nanoparticles via supramolecular host-guest self-assembly
… and binding mode between an OA and two ß-NaYF4 crystal surfaces of UCNPs. (ii) the binding behaviours of different organically functional groups (Chapter 4) Compared with the original of OA from the surface of UCNPs, we also choose several organic molecules which hold different functional …
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Synthesis, Functionalization, and Characterization of Dominant UV Emitting Upconverting Nanocrystals and Absolute Quantum Yield and Power Dependence Metrics for the Elucidation of Upconversion Mechanisms
… functionalization; literature standard, β-NaYF4 (2%Er, 20%Yb) UCNCs have been generated in highly uniform compositions to assess the size-dependent effects with respect to luminescent quenching surrounding a UCNC surface and functionalization methodologies have been offered as a proof of …