Effects of heat-treatment with a flux under reduced atmosphere on photoluminescence of green emitting (Ba, Sr)2SiO4:Eu2+ Phosphors

Tetsufumi Komukai; Jun Yokoyama; Yasushi Sato; Hideki Kato; Masato Kakihana

doi:10.2497/jjspm.63.855

Effects of heat-treatment with a flux under reduced atmosphere on photoluminescence of green emitting (Ba, Sr)₂SiO₄:Eu₂₊ Phosphors

Tetsufumi Komukai, Jun Yokoyama, Yasushi Sato, Hideki Kato, Masato Kakihana

IMRAM - Division of Inorganic Material Research

Research output: Contribution to journal › Article › peer-review

Abstract

The effects of heat-Treatments with various conditions such as temperature, atmosphere on photoluminescence properties of (Ba, Sr)₂SiO₄:Eu₂₊ phosphors were investigated in detail. The change of Photoluminescence and XRD pattern of (Ba, Sr)₂SiO₄:Eu₂₊ phosphors heat-Treated at various temperatures revealed that the reduction from Eu₃₊ to Eu₂₊ in the precursor powder was effectively promoted at the temperatures higher than melting temperature of fluxing agent. We also found that photoluminescence properties and particle shape of (Ba, Sr)₂SiO₄:Eu₂₊ phosphors were deeply affected by the incomplete reduction of Eu (Eu₃₊→Eu₂₊) and fluxing effect of BaCl2, and they were caused by a very small quantity of oxygen gas under reduced atmosphere.

Original language	English
Pages (from-to)	855-860
Number of pages	6
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	63
Issue number	10
DOIs	https://doi.org/10.2497/jjspm.63.855
Publication status	Published - 2016 Sept

Keywords

(Ba
Flux
Heat treatment
Phosphor
Reduction
Sr)SiO:Eu

Access to Document

10.2497/jjspm.63.855

Cite this

@article{a1e286472bad4e15acb86f892cd9acfd,

title = "Effects of heat-treatment with a flux under reduced atmosphere on photoluminescence of green emitting (Ba, Sr)2SiO4:Eu2+ Phosphors",

abstract = "The effects of heat-Treatments with various conditions such as temperature, atmosphere on photoluminescence properties of (Ba, Sr)2SiO4:Eu2+ phosphors were investigated in detail. The change of Photoluminescence and XRD pattern of (Ba, Sr)2SiO4:Eu2+ phosphors heat-Treated at various temperatures revealed that the reduction from Eu3+ to Eu2+ in the precursor powder was effectively promoted at the temperatures higher than melting temperature of fluxing agent. We also found that photoluminescence properties and particle shape of (Ba, Sr)2SiO4:Eu2+ phosphors were deeply affected by the incomplete reduction of Eu (Eu3+→Eu2+) and fluxing effect of BaCl2, and they were caused by a very small quantity of oxygen gas under reduced atmosphere.",

keywords = "(Ba, Flux, Heat treatment, Phosphor, Reduction, Sr)SiO:Eu",

author = "Tetsufumi Komukai and Jun Yokoyama and Yasushi Sato and Hideki Kato and Masato Kakihana",

year = "2016",

month = sep,

doi = "10.2497/jjspm.63.855",

language = "English",

volume = "63",

pages = "855--860",

journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

issn = "0532-8799",

publisher = "Funtai Funamtsu Yakin Kyokai/Japan Soc. of Powder Metallurgy",

number = "10",

}

Effects of heat-treatment with a flux under reduced atmosphere on photoluminescence of green emitting (Ba, Sr)₂SiO₄:Eu₂₊ Phosphors. / Komukai, Tetsufumi; Yokoyama, Jun; Sato, Yasushi et al.
In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 63, No. 10, 09.2016, p. 855-860.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Effects of heat-treatment with a flux under reduced atmosphere on photoluminescence of green emitting (Ba, Sr)2SiO4:Eu2+ Phosphors

AU - Komukai, Tetsufumi

AU - Yokoyama, Jun

AU - Sato, Yasushi

AU - Kato, Hideki

AU - Kakihana, Masato

PY - 2016/9

Y1 - 2016/9

N2 - The effects of heat-Treatments with various conditions such as temperature, atmosphere on photoluminescence properties of (Ba, Sr)2SiO4:Eu2+ phosphors were investigated in detail. The change of Photoluminescence and XRD pattern of (Ba, Sr)2SiO4:Eu2+ phosphors heat-Treated at various temperatures revealed that the reduction from Eu3+ to Eu2+ in the precursor powder was effectively promoted at the temperatures higher than melting temperature of fluxing agent. We also found that photoluminescence properties and particle shape of (Ba, Sr)2SiO4:Eu2+ phosphors were deeply affected by the incomplete reduction of Eu (Eu3+→Eu2+) and fluxing effect of BaCl2, and they were caused by a very small quantity of oxygen gas under reduced atmosphere.

AB - The effects of heat-Treatments with various conditions such as temperature, atmosphere on photoluminescence properties of (Ba, Sr)2SiO4:Eu2+ phosphors were investigated in detail. The change of Photoluminescence and XRD pattern of (Ba, Sr)2SiO4:Eu2+ phosphors heat-Treated at various temperatures revealed that the reduction from Eu3+ to Eu2+ in the precursor powder was effectively promoted at the temperatures higher than melting temperature of fluxing agent. We also found that photoluminescence properties and particle shape of (Ba, Sr)2SiO4:Eu2+ phosphors were deeply affected by the incomplete reduction of Eu (Eu3+→Eu2+) and fluxing effect of BaCl2, and they were caused by a very small quantity of oxygen gas under reduced atmosphere.

KW - (Ba

KW - Flux

KW - Heat treatment

KW - Phosphor

KW - Reduction

KW - Sr)SiO:Eu

UR - http://www.scopus.com/inward/record.url?scp=84990239948&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84990239948&partnerID=8YFLogxK

U2 - 10.2497/jjspm.63.855

DO - 10.2497/jjspm.63.855

M3 - Article

AN - SCOPUS:84990239948

SN - 0532-8799

VL - 63

SP - 855

EP - 860

JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

IS - 10

ER -

Effects of heat-treatment with a flux under reduced atmosphere on photoluminescence of green emitting (Ba, Sr)₂SiO₄:Eu₂₊ Phosphors

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this