Articles with "eu2 eu3" as a keyword



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Tuning of photoluminescence by co-doping Eu2+, Eu3+ and Tb3+ in Ca9NaZn(PO4)7 phosphor

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Published in 2018 at "Dyes and Pigments"

DOI: 10.1016/j.dyepig.2017.12.026

Abstract: Abstract A series of Ca9NaZn(PO4)7: Eu2+/Eu3+, Tb3+ (CNZP: Eu2+/Eu3+, Tb3+) phosphors were synthesized by the solid-state reaction method. The results of structure refinement indicate that the chemical formula of CNZP can be written as Ca9.12(5)Zn0.88(5)Na1.0(2)(PO4)7.… read more here.

Keywords: eu3 tb3; eu2 eu3; eu3; cnzp ... See more keywords
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Adjustable white luminescence and high thermal stability in Eu2+/Eu3+/Tb3+/Al co-doped aluminosilicate oxyfluoride glass

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Published in 2020 at "Journal of Alloys and Compounds"

DOI: 10.1016/j.jallcom.2020.156435

Abstract: Abstract In this paper, Eu2+/Eu3+/Tb3+/Al co-doped aluminosilicate oxyfluoride glass samples were synthesized via melt-quenching method in air atmosphere. Their structural and optical properties were systematically investigated through X-ray diffraction patterns, X-ray photoelectron spectroscopy, absorption spectra… read more here.

Keywords: eu3 tb3; glass; eu2 eu3; aluminosilicate oxyfluoride ... See more keywords
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Synthesis of Eu2+/Eu3+ Co-Doped Gallium oxide nanocrystals as a full colour converter for white light emitting diodes.

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Published in 2018 at "Journal of colloid and interface science"

DOI: 10.1016/j.jcis.2018.06.047

Abstract: Eu2+ and Eu3+ co-doped Ga2O3 nanocrystals (Ga2O3:Eu NCs) were synthesized in an organic phase at a low reaction temperature of 300 °C. The surface of Ga2O3:Eu NCs was passivated by oleylamine (OAm) and acetylacetone (acac). The… read more here.

Keywords: eu3 doped; transition; eu2 eu3; light emitting ... See more keywords
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Observation of energy transfer from Eu2+ to Eu3+ and tunable luminescence in phosphors YF3:Eu prepared by hydrothermal method

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Published in 2021 at "Journal of Luminescence"

DOI: 10.1016/j.jlumin.2020.117672

Abstract: Abstract Eu2+ and Eu3+ co-activated YF3:Eu phosphors were prepared by a traditional hydrothermal method with citric acid as reducing agent. Products with bitter gourd like morphology comprised of numerous nanoparticles show a blue emission of… read more here.

Keywords: eu2 eu3; energy transfer; transfer eu2; eu3 ... See more keywords
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Structure, luminescence of Eu2+ and Eu3+ in CaMgSi2O6 and their co-existence for the excitation-wavelength/temperature driven colour evolution.

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Published in 2021 at "Dalton transactions"

DOI: 10.1039/d1dt01377g

Abstract: Luminescent materials with controllable colour evolution features are demanded for the development of multi-level anti-counterfeiting technologies. Here we report the structural and luminescence properties of CaMgSi2O6:Ln (Ln = Eu2+, Eu3+, Eu2+/3+) samples in detail and… read more here.

Keywords: excitation wavelength; colour evolution; eu2 eu3;
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Tetrahedrally coordinated rigid crystal structure enables partial self-reduction of mixed-valence europium for optical thermometric application.

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Published in 2023 at "Dalton transactions"

DOI: 10.1039/d2dt03988e

Abstract: Mixed-valence europium-activated phosphors are receiving attention in many fields, such as lighting, anti-counterfeiting, optical recording, encryption, and temperature sensing. However, it remains difficult to construct mixed-valence europium-activated compounds due to the reductive and oxidative synthesis… read more here.

Keywords: eu2 eu3; valence; mixed valence; valence europium ... See more keywords
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Preparation and wide band emission characteristics of Eu2+/Eu3+ co-doped Ba3P4O13 phosphors

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Published in 2022 at "RSC Advances"

DOI: 10.1039/d2ra02478k

Abstract: A series of phosphors Ba3P4O13:xEu2+/3+ (x = 0–0.1) were synthesized in a CO reduction atmosphere at a relatively low temperature (1113 K) by the solid-phase method. Crystallization and optical properties were investigated by using powder… read more here.

Keywords: eu2 eu3; wide band; preparation wide; emission ... See more keywords
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Effect of precursor morphology on the structural properties, optical absorption, and luminescence of BaI2:Eu2+,Eu3+

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Published in 2017 at "Inorganic Materials"

DOI: 10.1134/s0020168517030116

Abstract: BaI2:Eu2+,Eu3+ powders have been prepared by heat-treating BaCO3:Eu3+ precursor powders of various morphologies in an iodinating agent atmosphere and their structural properties, morphology, optical absorption, and luminescence have been studied. The results demonstrate that the… read more here.

Keywords: optical absorption; structural properties; eu2 eu3; bai2 eu2 ... See more keywords
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The self-reduction synthesis and luminescent properties of Eu2+-Eu3+ activated BaZr0.2Si2O5.4 phosphors with white light emission for white light-emitting diodes

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Published in 2018 at "Modern Physics Letters B"

DOI: 10.1142/s0217984918500471

Abstract: The BaZr0.2Si2O5.4: Eu2+/Eu3+ phosphors were prepared with different concentrations of Eu2O3 by a self-reduction method under air condition. The X-ray diffraction and the photoluminescence properties of the prepared samples were analyzed. The emission spectra consisting… read more here.

Keywords: self reduction; light emission; bazr0 2si2o5; eu2 eu3 ... See more keywords