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   Articles with "red upconversion" as a keyword



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Modulated single band red upconversion luminescence from Ho3+ doped nanoparticles with two-wavelength excitation

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recommendations! Published in 2017 at "Journal of Alloys and Compounds"

DOI: 10.1016/j.jallcom.2017.08.214

Abstract: Abstract Single band red upconversion luminescence has the potential applications from science to engineering, however, suffered from low luminescence efficiency. Single band enhanced red upconversion luminescence from NaYF 4 : Ho nanoparticles has been realized… read more here.

Keywords: single band; wavelength excitation; luminescence; red upconversion ... See more keywords
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Boosting single-band red upconversion luminescence in colloidal NaErF4 nanocrystals: Effects of doping and inert shell

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recommendations! Published in 2019 at "Journal of Rare Earths"

DOI: 10.1016/j.jre.2018.10.012

Abstract: Abstract Single-band red upconversion luminescence (UCL) is vital to in vivo bioimaging as well as “see and treat” biomedicines. Herein, starting with the previously reported β-NaErF4:Tm UCNPs, we examined the effects of both Yb3+ doping and… read more here.

Keywords: doping inert; upconversion luminescence; band red; red upconversion ... See more keywords
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Deep-Tissue Temperature Sensing Realized in BaY2O4:Yb3+/Er3+ with Ultrahigh Sensitivity and Extremely Intense Red Upconversion Luminescence.

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recommendations! Published in 2020 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.0c01543

Abstract: In this paper, BaY2O4:Yb3+/Er3+, a high efficient red upconversion (UC) material, is first utilized as an optical thermometer in the biological window, accomplished through the fluorescence intensity ratio (FIR) of thermally coupled Stark sublevels of… read more here.

Keywords: temperature; bay2o4 yb3; sensitivity; red upconversion ... See more keywords
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Remarkably Enhanced Red Upconversion Emission in β-NaLuF4:Er,Tm Microcrystals via Ion Exchange.

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recommendations! Published in 2022 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.2c00899

Abstract: Internal OH- defects always cause significant depletion of excitation energy for low upconversion efficiency; however, preventing the incorporation of OH- into the crystal lattice is very difficult during the synthesis of upconversion crystals. In this… read more here.

Keywords: ion exchange; naluf4 microcrystals; upconversion; emission ... See more keywords
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Simultaneous enhancement of red upconversion luminescence and CT contrast of NaGdF4:Yb,Er nanoparticles via Lu3+ doping.

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recommendations! Published in 2018 at "Nanoscale"

DOI: 10.1039/c8nr06968a

Abstract: To date, lanthanide-doped upconversion nanoparticles (UCNPs) have been widely reported as a promising CT contrast agent because they have high atomic numbers and big X-ray attenuation coefficient values. However, it is still a challenge to… read more here.

Keywords: contrast; lu3 doping; lu3; via lu3 ... See more keywords