Results 31 to 40 of about 7,192 (202)
Photonics, 2022 By doping appropriate lanthanide ions, LiYF4 as a host luminescent material can simultaneously exhibit bright visible-light emission. A series of LiYF4:Yb3+/Ho3+ microparticles with different Mg2+ doping concentrations were synthesized and investigated ...
Dongdong Li +3 more
doaj +1 more source
Fabrication and characterization of erbium-doped toroidal microcavity lasers [PDF]
, 2006 Erbium-doped SiO2 toroidal microcavity lasers are fabricated on a Si substrate using a combination of optical lithography, etching, Er ion implantation, and CO2 laser reflow. Erbium is either preimplanted in the SiO2 base material or postimplanted into a
A. Polman +9 more
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Molecules, 2021 NaYF4:Er,Yb upconversion luminescent nanoparticles (UCNPs) were prepared by hydrothermal methods at 180 °C for 24 h. The X-ray diffraction (XRD) and TEM (transmission electron microscopy) images show that the resulting 60 nm UCNPs possess a hexagonal ...
T. M. Dung Cao +5 more
doaj +1 more source
Plasmon enhanced energy-transfer up-conversion in Yb3+-Er3+ co-doped LiNbO3 crystal [PDF]
, 2018 We have analyzed the effect of linear chains of metallic Ag nanoparticles on the optical properties of a periodically poled Yb 3+ -Er 3+ co-doped LiNbO 3 crystal.
Bausá, Luisa E. +4 more
core +1 more source
1.5 μm photoluminescence and upconversion photoluminescence in GeGaAsS:Er chalcogenide glass
Pure and Applied Chemistry, 2019 Abstract The paper reports on ≈1.5 μm Stokes photoluminescence (PL) emission and upconversion photoluminescence (UCPL) emission in the visible and near-infrared spectral region in Er3+-doped Ge25Ga8As2S65 chalcogenide glasses at pumping wavelengths of 980 and 1550 nm.
Vit Prokop +7 more
openaire +1 more source
Scientific Reports, 2023 Multiphoton absorbing upconversion nanoparticles are emerging as bioimaging materials but are limited by the low quantum yield of their visible fluorescence.
Armin Zarghami +3 more
doaj +1 more source
LaAlO3:Mn4+ as near-infrared emitting persistent luminescence phosphor for medical imaging : a charge compensation study [PDF]
, 2017 Mn4+-activated phosphors are emerging as a novel class of deep red/near-infrared emitting persistent luminescence materials for medical imaging as a promising alternative to Cr3+-doped nanomaterials.
De Clercq, Olivier +3 more
core +3 more sources
Rare earth based nanostructured materials: Synthesis, functionalization, properties and bioimaging and biosensing applications [PDF]
, 2017 Rare earth based nanostructures constitute a type of functional materials widely used and studied in the recent literature. The purpose of this review is to provide a general and comprehensive overview of the current state of the art, with special focus ...
Becerro Nieto, Ana Isabel +7 more
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Reliable low-cost fabrication of low-loss $Al_2O_3:Er^{3+}$ waveguides with 5.4-dB optical gain [PDF]
, 2009 A reliable and reproducible deposition process for the fabrication of $Al_2O_3$ waveguides with losses as low as 0.1 dB/cm has been developed. The thin films are grown at ~ 5 nm/min deposition rate and exhibit excellent thickness uniformity within 1 ...
Ay, F. +6 more
core +2 more sources
Nanomaterials, 2021 In this work, the photocatalytic hydrogen evolution from ammonia borane under near-infrared laser irradiation at ambient temperature was demonstrated by using the novel core-shell upconversion-semiconductor hybrid nanostructures (NaGdF4:Yb3+/Er3+@NaGdF4 ...
Andrew J. Evangelista +2 more
doaj +1 more source