发明授权
- 专利标题： Phosphor, producing method thereof, and light-emitting device employing the phosphor
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申请号： US15659738申请日： 2017-07-26
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公开(公告)号： US10711186B2公开(公告)日： 2020-07-14
- 发明人: Ryosuke Hiramatsu , Keiko Albessard , Kunio Ishida , Yasushi Hattori , Masahiro Kato
- 申请人： Kabushiki Kaisha Toshiba , TOSHIBA MATERIALS CO., LTD.
- 申请人地址： JP Minato-ku JP Yokohama-shi
- 专利权人： Kabushiki Kaisha Toshiba,TOSHIBA MATERIALS CO., LTD.
- 当前专利权人： Kabushiki Kaisha Toshiba,TOSHIBA MATERIALS CO., LTD.
- 当前专利权人地址： JP Minato-ku JP Yokohama-shi
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权： com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@6c800fe0
- 主分类号： C09K11/59
- IPC分类号： C09K11/59 ; C09K11/77 ; H01L33/50 ; C09K11/61
摘要：
Embodiments of the present invention provide a phosphor improved in the emission intensity maintenance ratio without impairing the emission intensity and further a light-emitting device employing that phosphor. The phosphor is activated by manganese and has a basic structure comprising at least one element selected from the group consisting of potassium, sodium and calcium; at least one element selected from the group consisting of silicon and titanium; and fluorine. In an IR absorption spectrum of the phosphor, the intensity ratio of the peak in 3570 to 3610 cm−1 to that in 1200 to 1240 cm−1 is 0.1 or less.
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