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Wavelength conversion members and light emitting devices 发明申请

2023-04-05 2610 1565K 0

专利信息

申请日期 2025-07-27 申请号 JP2020125709
公开(公告)号 JP2022021853A 公开(公告)日 2022-02-03
公开国别 JP 申请人省市代码 全国
申请人 日亜化学工業株式会社
简介 A wavelength conversion member includes a support and a wavelength conversion layer including a first phosphor having a composition represented by Formula (1) and having an emission peak wavelength in a range from 550 nm to 620 nm, and a second phosphor having a different emission peak wavelength and/or a full width at half maximum from the first phosphor. An amount of the first phosphor in the wavelength conversion layer is in a range from 20 mass % to 80 mass % relative to a total amount of the phosphors In Formula (1), M1 represents at least one of rare earth elements other than La and Ce, a total molar content percentage of Y, Gd, and Lu in M1 is 90% or more, and p, q, r, and s satisfy 2.7≤(p+q+r)≤3.3, 0≤r≤1.2, 10≤s≤12, and 0


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