Articles with "eu2" as a keyword



Rapid Synthesis of Red‐Emitting Sr2Sc0.5Ga1.5O5:Eu2+ Phosphors and the Tunable Photoluminescence Via Sr/Ba Substitution

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Published in 2021 at "Advanced Optical Materials"

DOI: 10.1002/adom.202100131

Abstract: Discovering new Eu2+‐doped red‐emitting phosphors in oxide‐based materials is a challenge for white light‐emitting diode (WLED) applications. Herein, a highly efficient high‐frequency induction heating method is employed to rapidly prepare the red‐emitting Sr2Sc0.5Ga1.5O5:Eu2+ phosphors peaking… read more here.

Keywords: eu2; photoluminescence; 5o5 eu2; emitting sr2sc0 ... See more keywords
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Synthesis and luminescence properties of Sr2−xYxSi5−xAlxN8:Eu2+ red phosphor for white light-emitting diodes

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Published in 2018 at "Journal of Materials Science"

DOI: 10.1007/s10853-018-2340-2

Abstract: To improve the luminescence properties of Sr2Si5N8:Eu2+ phosphor, Sr2−xYxSi5−xAlxN8:Eu2+ specimens in which Sr2+ and Si4+ were partially substituted with Y3+ and Al3+ were prepared by carbothermal reduction nitridation. The obtained Sr2−xYxSi5−xAlxN8:Eu2+ samples showed standard Sr2Si5N8… read more here.

Keywords: xalxn8 eu2; sr2 xyxsi5; xyxsi5 xalxn8; luminescence ... See more keywords
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Optical spectra of Eu2+ ion doped KMgF3 single crystals grown by Bridgman method

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Published in 2019 at "Optoelectronics Letters"

DOI: 10.1007/s11801-019-8100-y

Abstract: High-quality KMgF3 single crystal containing 0.5 mol% europium (Eu) was prepared by an improved Bridgman method. X-ray diffraction (XRD), photoluminescence spectra and fluorescence lifetime were measured. The results indicate the reduction of Eu3+ to Eu2+… read more here.

Keywords: kmgf3 single; single crystal; doped kmgf3; ion ... See more keywords
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Synthesis of Sr(1-x-y)Al4O7:Eux2+,Lny3+ (Ln = Dy, Y, Pr) nanophosphors using rapid gel combustion process and their down conversion characteristics

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Published in 2017 at "Electronic Materials Letters"

DOI: 10.1007/s13391-017-6038-4

Abstract: Eu2+ and Eu2++Ln3+ doped SrAl4O7 nanophosphors were synthesized by rapid gel combustion process. The morphology of prepared phosphors was examined with scanning and transmission electron microscopy. The phase identification and the crystal structures of nanophosphors… read more here.

Keywords: rapid gel; gel combustion; combustion process; eu2 ... See more keywords
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Anomalous preparation, intense 5D0→7F4 emission and adjustable double center emission of Eu3+ and Eu2+ codoped Ca2Al2SiO7

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Published in 2019 at "Ceramics International"

DOI: 10.1016/j.ceramint.2019.07.017

Abstract: Abstract A series of Eu3+/Eu2+ codoped Ca2Al2SiO7 were synthesized by traditional solid-state synthesis in reducing atmosphere. In this work, XRD powder diffraction proved that the obtained sample was pure. Photoluminescence properties are characterized by excitation,… read more here.

Keywords: codoped ca2al2sio7; emission; eu2 codoped; eu2 ... See more keywords
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A broad band yellow-emitting Sr8CaBi(PO4)7:Eu2+ phosphor for n-UV pumped white light emitting devices

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Published in 2018 at "Dyes and Pigments"

DOI: 10.1016/j.dyepig.2017.10.004

Abstract: Abstract A novel broad band yellow-emitting Sr8CaBi(PO4)7:Eu2+ (SCBP:Eu2+) phosphor was synthesized via conventional high-temperature solid-state reaction. It's crystal structure and phase were investigated with X-ray diffraction (XRD), Rietveld refinement method and transmission electron microscopy (TEM).… read more here.

Keywords: broad band; yellow emitting; eu2; eu2 phosphor ... See more keywords
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Novel highly efficient blue-emitting SrHfSi2O7:Eu2+ phosphor: A potential color converter for WLEDs and FEDs

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Published in 2019 at "Dyes and Pigments"

DOI: 10.1016/j.dyepig.2018.11.052

Abstract: Abstract A novel blue-emitting phosphor SrHfSi2O7: Eu2+ (SHSO: Eu2+) was designed and prepared via solid-state reaction, and the relationship between their crystal structure and luminescence properties were explored in detail. The structure and phase formation… read more here.

Keywords: srhfsi2o7 eu2; eu2 phosphor; color; phosphor ... See more keywords
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Multichannel luminescence properties and ultrahigh-sensitive optical temperature sensing of mixed-valent Eu2+/Eu3+ co-activated Ca8ZrMg(PO4)6(SiO4) phosphors

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Published in 2019 at "Journal of Alloys and Compounds"

DOI: 10.1016/j.jallcom.2019.01.092

Abstract: Abstract A novel dual-emitting Ca8ZrMg(PO4)6(SiO4): (Eu3+, Eu2+) phosphors with ultrahigh-sensitive optical temperature sensing are prepared by a conventional solid-state method. The Eu2+/Eu3+ co-activated Ca8ZrMg(PO4)6(SiO4) phosphors exhibit efficient dual-mode emissions with an intense, broad blue emission… read more here.

Keywords: temperature; eu2; po4 sio4; ca8zrmg po4 ... See more keywords

SrAl2O4: Eu2+, Dy3+ persistent luminescent materials functionalized with the Eu3+(TTA)-complex by microwave-assisted method

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Published in 2021 at "Journal of Alloys and Compounds"

DOI: 10.1016/j.jallcom.2021.160608

Abstract: Abstract Recently, several classes of rare-earth-doped luminescent materials have been drawing attention due to structurally engineered energy converting systems, capable of tuning absorption and emission spectral ranges, outlining new materials and applications in photonics. In… read more here.

Keywords: sral2o4 eu2; microwave assisted; eu2; eu2 dy3 ... See more keywords
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Enhancement of SrSi2O2N2:Eu2+ phosphor by means of oxygen to nitrogen control

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Published in 2021 at "Journal of Alloys and Compounds"

DOI: 10.1016/j.jallcom.2021.161047

Abstract: Abstract In this study phosphor powders with the nominal composition of Sr0.98Eu0.02Si2O(5-1.5x)Nx (x in the range of 1.33-2.66) was successfully synthesized through the conventional solid-state reaction method. We carried out studies on the N3- and… read more here.

Keywords: enhancement srsi2o2n2; triclinic phase; srsi2o2n2; phosphor ... See more keywords

Tunable blue-green color emission and energy transfer of Sr3NaSc(PO4)3F:Eu2+,Tb3+ phosphors with near-UV broad band excited for white LEDs

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Published in 2019 at "Journal of Luminescence"

DOI: 10.1016/j.jlumin.2018.10.078

Abstract: Abstract A series of Eu2+ and/or Tb3+ doped Sr3NaSc(PO4)3F phosphors were prepared under a high temperature solid-state reaction. The crystal structure and morphology of the phosphors were characterized by the X-ray diffraction and field emission… read more here.

Keywords: eu2 tb3; eu2; sr3nasc po4; po4 eu2 ... See more keywords