Combustion synthesis of LaSi3N5:Eu2+ phosphor powders

Zhou, You; Yoshizawa, Yu‐ichi; Lenčéš, Zoltán; Šajgalı́k, Pavol

doi:10.1016/j.jeurceramsoc.2010.08.004

Cited by 18 publications

(8 citation statements)

References 22 publications

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“…Zhou et al studied a similar system prepared by combustion synthesis method. 13) They observed an emission peak at 553 nm. This emission was described to the 5d4f 6 4f 7 transition of Eu 2+ .…”

Section: Resultsmentioning

confidence: 99%

Luminescent Properties of Europium-Doped Lanthanum Silicon Nitride Phosphor

Lenčéš¹,

Hrabalová²,

Czı́merová³

et al. 2012

Journal of the Korean Ceramic Society

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Europium-doped LaSi 3 N 5 phosphor was synthesized from LaSi/Si/Si 3 N 4 /Eu 2 O 3 mixture by nitridation at 1390 o C and additional annealing at 1650 o C for 4 h. The phosphor shows emissions in the green light region with a maximum at 560 nm. With increasing europium content in the general formula La 1-z Eu z Si 3 N 5-z O 1.5z from z = 0.01 to 0.06 there was a maximum emission for z = 0.04 followed by concentration quenching for the highest europium content (z = 0.06).

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Section: Resultsmentioning

confidence: 99%

Luminescent Properties of Europium-Doped Lanthanum Silicon Nitride Phosphor

Lenčéš¹,

Hrabalová²,

Czı́merová³

et al. 2012

Journal of the Korean Ceramic Society

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“…Excitation spectra consist of a broadband covering wave lengths from the UV to visible region. The broad band emission peak at 628 nm of the Sr 2 Si 5 N 8 :Eu 2+ (2 at.%) phosphor at the excitation of 455 nm is assigned to the allowed 4f 6 5d 1 → 4f 7 transition of Eu 2+ ion [15]. Due to the high covalent environment around Eu 2+ ion, emission of Sr 2 Si 5 N 8 :Eu 2+ phosphor was observed at a fairly longer wavelength region compared to MF 2 :Eu 2+ or M 2 SiO 4 :Eu 2+ (M = Sr/Ba) [19,20].…”

Section: Photoluminescence Propertiesmentioning

confidence: 95%

“…In recent years, SiN 4 -base covalent nitride materials, including nitridosilicates, nitridoaluminosilicates and other nitrides, etc., have been extensively studied as good host lattices for LEDs, such as M 2 Si 5 N 8 :Eu 2+ and MAlSiN 3 :Eu 2+ (M = Ca, Sr, Ba) [7][8][9][10][11][12][13][14][15][16]. Among these phosphors, Sr 2 Si 5 N 8 :Eu 2+ has demonstrated high luminescence intensity and very low thermal quenching.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Sr2Si5N8:Eu2+ for white light-emitting diodes by multi-step heat treatment

Luong

Zhang

Lee

2011

Journal of Alloys and Compounds

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“…7 transition of Eu 2+ ion 8) . Due to the high covalent environment around Eu 2+ ion, emission of Sr/SmSi 5 N 8 :Eu 2+ phosphor was observed at a fairly .…”

Section: Photoluminescence Propertiesmentioning

confidence: 99%

Synthesis and Luminescence Properties of Sr/SmSi₅N₈:Eu²⁺Phosphor for White Light-Emitting-Diode

Luong¹,

Lee²

2014

Journal of the Korean institute of surface engineering

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Red-emitting nitride phosphors recently attracted considerable attention because of their high thermal stability and high color rendering index properties. For excellent phosphor of white light-emitting-diode, ternary nitride phosphor of Sr/SmSi 5 N 8 :Eu 2+ with different Eu 2+ ion concentration were synthesized by solid state reaction method. In this work, red-emitting nitride Sr/SmSi 5 N 8 :Eu 2+ phosphor was successfully synthesized by using multi-step high frequency induction heat treatment. The effects of molar ratio of component and experimental conditions on luminescence property of prepared phosphors have been investigated. The structure and luminescence properties of prepared Sr/SmSi 5 N 8 :Eu 2+ phosphors were investigated by XRD and photoluminescence spectroscopy. The excitation spectra of Sr/SmSi 5 N 8 :Eu 2+ phosphors indicated broad excitation wavelength range of 300 -550 nm, namely from UV to visible area with distinct enhanced emission peaks. With an increase of Eu 2+ ion concentration, the peak position of emission in spectra was red-shifted from 613 to 671 nm. After via multi-step heat treatment, prepared phosphor showed excellent luminescence properties, such as high emission intensity and low thermal quenching, better than commercial phosphor of Y 3 Al 5 O 12 :Ce 3+. Using Eu 2 O 3 as a raw material for Eu 2+ dopant with nitrogen gas flowing instead of using commercial EuN chemical for Sr/SmSi 5 N 8 :Eu 2+ synthesis is one of characteristic of this work.

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Combustion synthesis of LaSi3N5:Eu2+ phosphor powders

Cited by 18 publications

References 22 publications

Luminescent Properties of Europium-Doped Lanthanum Silicon Nitride Phosphor

Luminescent Properties of Europium-Doped Lanthanum Silicon Nitride Phosphor

Preparation of Sr2Si5N8:Eu2+ for white light-emitting diodes by multi-step heat treatment

Synthesis and Luminescence Properties of Sr/SmSi₅N₈:Eu²⁺Phosphor for White Light-Emitting-Diode

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Combustion synthesis of LaSi3N5:Eu2+ phosphor powders

Cited by 18 publications

References 22 publications

Luminescent Properties of Europium-Doped Lanthanum Silicon Nitride Phosphor

Luminescent Properties of Europium-Doped Lanthanum Silicon Nitride Phosphor

Preparation of Sr2Si5N8:Eu2+ for white light-emitting diodes by multi-step heat treatment

Synthesis and Luminescence Properties of Sr/SmSi5N8:Eu2+Phosphor for White Light-Emitting-Diode

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Synthesis and Luminescence Properties of Sr/SmSi₅N₈:Eu²⁺Phosphor for White Light-Emitting-Diode