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公开(公告)号：US20240240082A1
公开(公告)日：2024-07-18
申请号：US18565503
申请日：2022-05-26
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Tomokazu YOSHIDA , Kazuya NISHIMATA
CPC classification number: C09K11/77348 , H01L33/502 , H01L2933/0041
Abstract: Provided is a fluoride phosphor that can improve reliability in a light-emitting device. The fluoride phosphor includes fluoride particles and an oxide covering at least a portion of the surface of the fluoride particles. The oxide contains at least one element selected from the group consisting of Si, Al, Ti, Zr, Sn, and Zn, and a content percentage of the oxide is in a range from 2 mass % to 30 mass %. The fluoride particles have a composition containing an element M including at least one element selected from the group consisting of Group 4 elements, Group 13 elements, and Group 14 elements, an alkali metal, Mn, and F, and when the number of moles of the alkali metal is 2, the number of moles of Mn is in a range greater than 0 and less than 0.2, the number of moles of the element M is a range greater than 0.8 and less than 1, and the number of moles of F is in a range greater than 5 and less than 7.
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公开(公告)号：US20240240080A1
公开(公告)日：2024-07-18
申请号：US18565218
申请日：2022-05-26
Applicant: NICHIA CORPORATION
Inventor： Tomokazu YOSHIDA , Kenichi AOYAGI , Kazuya NISHIMATA
CPC classification number: C09K11/646 , C09K11/025 , H01L33/502
Abstract: Provided is a light-emitting material containing a phosphor that emits red light with high luminance. The light-emitting material contains a fluoride phosphor having a first composition containing an alkali metal including K, Si, Al, Mn, and F. In the first composition, when a total number of moles of the alkali metal is 2, a total number of moles of Si, Al, and Mn is in a range from 0.9 to 1.1, a number of moles of Al is in a range from greater than 0 to 0.1, a number of moles of Mn is in a range from greater than 0 to 0.2, and a number of moles of F is in a range from 5.9 to less than 6.0. The fluoride phosphor has a cubic system crystal structure and has a lattice constant of 0.8138 nm or larger.
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公开(公告)号：US20170037311A1
公开(公告)日：2017-02-09
申请号：US15228109
申请日：2016-08-04
Applicant: NICHIA CORPORATION
Inventor： Shoji HOSOKAWA , Motoharu MORIKAWA , Tadayoshi YANAGIHARA , Kenichi AOYAGI , Takashi KAIDE
CPC classification number: C09K11/7734 , C09K11/0883
Abstract: A method for producing a β-sialon fluorescent material can be provided. The method includes preparing a composition containing silicon nitride that contains aluminium, an oxygen atom, and europium, heat-treating the composition in a rare gas atmosphere or in a vacuum, and contacting the heat-treated composition with a gas containing elemental fluorine.
Abstract translation: 可以提供β-赛隆荧光体的制造方法。 该方法包括制备含有铝，氧原子和铕的氮化硅的组合物，在稀有气体气氛或真空中对组合物进行热处理，并使热处理组合物与含有元素氟的气体接触。
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