Synthesis and luminescent properties of low oxygen contained Eu2+-doped Ca-α-SiAlON phosphor from calcium cyanamide reduction

Xianqing PIAO; Ken ichi Machida; Takashi Horikawa; Hiromasa Hanzawa

doi:10.1016/S1002-0721(08)60064-2

Synthesis and luminescent properties of low oxygen contained Eu²⁺-doped Ca-α-SiAlON phosphor from calcium cyanamide reduction

Xianqing PIAO, Ken ichi Machida, Takashi Horikawa, Hiromasa Hanzawa

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

31 Citations (Scopus)

Abstract

A new convenient calcium cyanamide (CaCN₂) reduction route was developed to synthesize the Eu²⁺ activated Ca-α-SiAlON phosphors containing low oxygen content. The luminescence properties of the obtained products were investigated for white LEDs application. The critical Eu²⁺ concentration in various hosts and its effect on the photoluminescence properties were studied. The optimized sample (10at.% Eu²⁺ vs. Ca²⁺) could be efficiently excited by the current GaN/InGaN blue LED chips and provided emission intensity competitive with that of YAG:Ce³⁺ (P46-Y3) standard, revealing that this phosphor was a potential candidate for phosphor-converted white LEDs.

Original language	English
Pages (from-to)	198-202
Number of pages	5
Journal	Journal of Rare Earths
Volume	26
Issue number	2
DOIs	https://doi.org/10.1016/S1002-0721(08)60064-2
Publication status	Published - 2008 Apr
Externally published	Yes

Keywords

CaCN
Eu
nitride phosphor
rare earths
SiAlON
white LEDs

ASJC Scopus subject areas

Chemistry(all)
Geochemistry and Petrology

Access to Document

10.1016/S1002-0721(08)60064-2

Cite this

@article{142d5599266247428bcca3fd0572d4a5,

title = "Synthesis and luminescent properties of low oxygen contained Eu2+-doped Ca-α-SiAlON phosphor from calcium cyanamide reduction",

abstract = "A new convenient calcium cyanamide (CaCN2) reduction route was developed to synthesize the Eu2+ activated Ca-α-SiAlON phosphors containing low oxygen content. The luminescence properties of the obtained products were investigated for white LEDs application. The critical Eu2+ concentration in various hosts and its effect on the photoluminescence properties were studied. The optimized sample (10at.% Eu2+ vs. Ca2+) could be efficiently excited by the current GaN/InGaN blue LED chips and provided emission intensity competitive with that of YAG:Ce3+ (P46-Y3) standard, revealing that this phosphor was a potential candidate for phosphor-converted white LEDs.",

keywords = "CaCN, Eu, nitride phosphor, rare earths, SiAlON, white LEDs",

author = "Xianqing PIAO and Machida, {Ken ichi} and Takashi Horikawa and Hiromasa Hanzawa",

note = "Funding Information: Foundation item: Project partially supported by a Grant-in-Aid for the Scientific Research (No.16080210) on Priority Areas (440) from the Ministry of Education, Culture, Sports, Science and Technology of Japan Corresponding author: Ken-ichi Machida (E-mail: machida@casi.osaka-u.ac.jp; Fax: +81-6-6879-4209)",

year = "2008",

month = apr,

doi = "10.1016/S1002-0721(08)60064-2",

language = "English",

volume = "26",

pages = "198--202",

journal = "Journal of Rare Earths",

issn = "1002-0721",

publisher = "Chinese Rare Earth Society",

number = "2",

}

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T1 - Synthesis and luminescent properties of low oxygen contained Eu2+-doped Ca-α-SiAlON phosphor from calcium cyanamide reduction

AU - PIAO, Xianqing

AU - Machida, Ken ichi

AU - Horikawa, Takashi

AU - Hanzawa, Hiromasa

N1 - Funding Information: Foundation item: Project partially supported by a Grant-in-Aid for the Scientific Research (No.16080210) on Priority Areas (440) from the Ministry of Education, Culture, Sports, Science and Technology of Japan Corresponding author: Ken-ichi Machida (E-mail: machida@casi.osaka-u.ac.jp; Fax: +81-6-6879-4209)

PY - 2008/4

Y1 - 2008/4

N2 - A new convenient calcium cyanamide (CaCN2) reduction route was developed to synthesize the Eu2+ activated Ca-α-SiAlON phosphors containing low oxygen content. The luminescence properties of the obtained products were investigated for white LEDs application. The critical Eu2+ concentration in various hosts and its effect on the photoluminescence properties were studied. The optimized sample (10at.% Eu2+ vs. Ca2+) could be efficiently excited by the current GaN/InGaN blue LED chips and provided emission intensity competitive with that of YAG:Ce3+ (P46-Y3) standard, revealing that this phosphor was a potential candidate for phosphor-converted white LEDs.

AB - A new convenient calcium cyanamide (CaCN2) reduction route was developed to synthesize the Eu2+ activated Ca-α-SiAlON phosphors containing low oxygen content. The luminescence properties of the obtained products were investigated for white LEDs application. The critical Eu2+ concentration in various hosts and its effect on the photoluminescence properties were studied. The optimized sample (10at.% Eu2+ vs. Ca2+) could be efficiently excited by the current GaN/InGaN blue LED chips and provided emission intensity competitive with that of YAG:Ce3+ (P46-Y3) standard, revealing that this phosphor was a potential candidate for phosphor-converted white LEDs.

KW - CaCN

KW - Eu

KW - nitride phosphor

KW - rare earths

KW - SiAlON

KW - white LEDs

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JO - Journal of Rare Earths

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