Presentation 2015-01-23
Eu^<3+>-activated III_a-O-VII_b-S (III_a=La,Gd,VII_b=F,Cl) red phosphors
Yoji Kageyama, Masahiro Okada, Tadashi Ishigaki, Koutoku Ohmi, Ryo Yoshimatsu,
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Abstract(in English) In this study, we investigated the oxidation fluoride sulfide-based matrix material for the purpose of implementation of near-ultraviolet to blue excitation with charge transfer state(CTS) excitation band by the combination of anion elements. As a result, we confirmed that the valence of Eu ions are incorporated into the matrix by the degree of ionic-covalent changes. The light emission characteristics from Eu substituted on two different La sites from La_3OF_3S_2:Eu are respectively obtained, and absorption seems to be due to CTS was observed at around 400~500nm.
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Keyword(in English) charge transfer state (CTS) / La_3OF_3S_2:Eu / covalent character / oxidation fluoride sulfide-based matrix
Paper # EID2014-49
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Committee EID
Conference Date 2015/1/15(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Eu^<3+>-activated III_a-O-VII_b-S (III_a=La,Gd,VII_b=F,Cl) red phosphors
Sub Title (in English)
Keyword(1) charge transfer state (CTS)
Keyword(2) La_3OF_3S_2:Eu
Keyword(3) covalent character
Keyword(4) oxidation fluoride sulfide-based matrix
1st Author's Name Yoji Kageyama
1st Author's Affiliation Dept. Electrical and Electronic Eng., Tottori Univ.()
2nd Author's Name Masahiro Okada
2nd Author's Affiliation Dept. Electrical and Electronic Eng., Tottori Univ.
3rd Author's Name Tadashi Ishigaki
3rd Author's Affiliation Tottori University Electronic Display Research Center
4th Author's Name Koutoku Ohmi
4th Author's Affiliation Dept. Electrical and Electronic Eng., Tottori Univ.:Tottori University Electronic Display Research Center
5th Author's Name Ryo Yoshimatsu
5th Author's Affiliation Denka Ltd.
Date 2015-01-23
Paper # EID2014-49
Volume (vol) vol.114
Number (no) 407
Page pp.pp.-
#Pages 4
Date of Issue