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Salt-assisted combustion synthesis of Ca-alpha-SiAlON:Eu2+ phosphors

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Title: Salt-assisted combustion synthesis of Ca-alpha-SiAlON:Eu2+ phosphors
Authors: Saito, Genki Browse this author →KAKEN DB
Niu, Jing Browse this author
Yi, Xuemei Browse this author
Kunisada, Yuji Browse this author
Sakaguchi, Norihito Browse this author →KAKEN DB
Akiyama, Tomohiro Browse this author →KAKEN DB
Keywords: Phosphor
Oxynitride
SiAlON
Issue Date: 5-Oct-2016
Publisher: Elsevier
Journal Title: Journal of alloys and compounds
Volume: 681
Start Page: 22
End Page: 27
Publisher DOI: 10.1016/j.jallcom.2016.04.211
Abstract: In this study, Ca-alpha-SiAlON:Eu2+ yellow phosphors for white light-emitting diodes (LEDs) were synthesized via a facile combustion synthesis method by using CaO, Eu2O3, Si, and Al as raw materials, while NaCl and Si3N4 were utilized as diluents to contain the combustion temperature. The concentration of Eu was varied, and the resulting changes in phase purity, photoluminescence properties, and thermal quenching were investigated. We observed that the increase in lattice constant depended on the amount of Al, while the Ca sites were partially substituted by Eu ions. The synthesized Ca-alpha-SiAlON: Eu2+ powders exhibited emission wavelength at 556-560 nm and high thermal stability, revealing high potential for application in white LEDs.
Rights: © 2016, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/71626
Appears in Collections:エネルギー・マテリアル融合領域研究センター (Center for Advanced Research of Energy and Material) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 齊藤 元貴

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