Articles with "white leds" as a keyword



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Fabrication and optical properties of divalent Cu2+ ions incorporated Ce:YAG transparent ceramics for white LEDs

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Published in 2019 at "Ceramics International"

DOI: 10.1016/j.ceramint.2018.11.177

Abstract: Abstract Transparent Ce:YAG ceramics via Cu 2+ incorporating annealed at 1450 °C were successfully fabricated by the solid-state method to probe their potential applications in white light-emitting diodes (LEDs). The influence of Cu 2+ concentration on… read more here.

Keywords: white leds; optical properties; fabrication optical; transparent ceramics ... See more keywords
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Synthesis and luminescent behavior of Dy:Y3Ga5O12 phosphor for UV induced white LEDs

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Published in 2017 at "Optik"

DOI: 10.1016/j.ijleo.2017.06.085

Abstract: Abstract The synthesis, X-ray diffraction (XRD) pattern, excitation spectrum, emission spectra and decay times were studied for the first time to our best knowledge. The Dy:Y 3 Ga 5 O 12 (Dy:YGG) phosphors with Dy… read more here.

Keywords: ygg phosphors; excitation; induced white; synthesis luminescent ... See more keywords
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Efficient and heat-conducting color converter of phosphor glass film printed on sapphire substrate for high-power white LEDs/LDs

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Published in 2019 at "Journal of Non-Crystalline Solids"

DOI: 10.1016/j.jnoncrysol.2019.04.026

Abstract: Abstract Thermal stability and heat dissipation of color converter are the key roadblocks for high-power white light-emitting diodes (LEDs) and laser diodes (LDs). In this work, we fabricated an efficient and heat-conducting color converter based… read more here.

Keywords: heat; white leds; color; phosphor ... See more keywords
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Synthesis, structure and optical properties of novel thermally robust Dy3+-doped Ca9Sc(PO4)7 phosphors for NUV-excited white LEDs

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Published in 2020 at "Journal of Rare Earths"

DOI: 10.1016/j.jre.2020.05.007

Abstract: Abstract The powder samples of Ca9Sc(PO4)7:xDy3+ white emitting phosphors were prepared via a solid state reaction technique. The Ca9Sc(PO4)7:Dy3+ samples were researched by using the GSAS Rietveld refinement and X-ray diffraction (XRD) methods, and SEM… read more here.

Keywords: po4; excited white; dy3; ca9sc po4 ... See more keywords
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Spectral properties and Judd–Ofelt analysis of novel red phosphors Gd2InSbO7:Eu3+ with high color purity for white LEDs

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Published in 2020 at "Journal of Rare Earths"

DOI: 10.1016/j.jre.2020.08.002

Abstract: Abstract Gd2InSbO7:Eu3+ red phosphors were successfully synthesized via high-temperature solid–state reaction. The phase purity, particle size, and luminescence properties of obtained phosphors were measured and analyzed in detail. The Gd2InSbO7 lattice possesses cubic structure with… read more here.

Keywords: color; judd ofelt; red phosphors; gd2insbo7 eu3 ... See more keywords
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CaAlSiN3:Eu2+-based color-converting coating application for white LEDs: Reduction of blue-light harm and enhancement of CRI value

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Published in 2017 at "Materials Research Bulletin"

DOI: 10.1016/j.materresbull.2017.03.002

Abstract: Abstract In this paper, red color-converting coating on glass substrate is prepared by a simple spray painting method using CaAlSiN 3 :Eu 2+ red emitting phosphor and silica sol matrix for application in reducing the… read more here.

Keywords: blue light; cri value; color converting; converting coating ... See more keywords

Fabrication and performance assessment of coprecipitation-based YAG:Ce nanopowders for white LEDs

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Published in 2018 at "Microelectronic Engineering"

DOI: 10.1016/j.mee.2018.07.011

Abstract: Abstract The quality of YAG:Ce phosphors will influence the luminescent performance of white LEDs devices. Therefore, in this study, we attempted to synthesis high quality YAG:Ce phosphors using coprecipitation method. YAG:Ce precursors were synthesized through… read more here.

Keywords: coprecipitation; calcination; yag nanopowders; performance ... See more keywords
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White Light-Emitting Diodes Based on Individual Polymerized Carbon Nanodots

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Published in 2017 at "Scientific Reports"

DOI: 10.1038/s41598-017-12083-2

Abstract: A search for new phosphor materials that exhibit high light-emission, spectral purity, long-time stability and processability capture particular attention to modern solid-state lighting. Here, polymerizable silane pre-functionalized carbon dot (SiCD) fluids were dripped and co-polymerized… read more here.

Keywords: carbon; emitting diodes; light emitting; white light ... See more keywords
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Photoluminescence properties of novel BaGd2Si3O10:RE2+/3+ (RE = Eu or Ce) phosphors with trichromatic emission for white LEDs

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Published in 2017 at "New Journal of Chemistry"

DOI: 10.1039/c7nj01890h

Abstract: Novel phosphors BaGd2Si3O10:RE2+/3+ (RE = Eu or Ce) were designed and prepared by a solid state reaction. The crystal structure was characterized by X-ray diffraction. The optical band gap was estimated by the diffuse reflectance… read more here.

Keywords: emission; bagd2si3o10 re2; trichromatic emission; photoluminescence properties ... See more keywords
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Co-precipitation synthesis and photoluminescence properties of BaTiF6:Mn4+: an efficient red phosphor for warm white LEDs

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Published in 2018 at "Journal of Materials Chemistry C"

DOI: 10.1039/c7tc04196a

Abstract: The investigation of efficient red phosphors is highly desired for the development of novel warm white light emitting diodes (WLEDs). In this paper, we report on an efficient red phosphor of Mn4+-activated BaTiF6 by a… read more here.

Keywords: efficient red; warm white; red phosphor; phosphor ... See more keywords
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The effect of local structure on the luminescence of Eu2+ in ternary phosphate solid solutions by cationic heterovalent substitution and their application in white LEDs

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Published in 2021 at "Journal of Materials Chemistry C"

DOI: 10.1039/d0tc05246a

Abstract: In this work, using β-Ca3(PO4)2 as a structural model, a series of [Ca9Na3xY1−x(PO4)7 (CNYPO-I, 0 ≤ x ≤ 1/2) ← Ca3(PO4)2 → Ca9+yNa3/2−y/2Y(1−y)/2(PO4)7 (CNYPO-II, 0 ≤ y ≤ 1)] phosphors were prepared using a cationic… read more here.

Keywords: heterovalent substitution; luminescence; structure; substitution ... See more keywords