RED FLUORESCENT BODY AND LIGHT-EMITTING DEVICE

Provided is a red fluorescent body that is represented by general formula: MSiAlN3 (where M represents at least one element selected from Mg, Ca, Sr, and Ba), a portion of M being substituted with Eu, and that has, as a host crystal, the same crystal structure as that of the CaAlSiN3 crystal phase,...

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Bibliographic Details
Main Authors TAKEDA, Yusuke, WATANABE, Shintaro, TAKAMURA, Marina, NOMIYAMA, Tomohiro
Format Patent
LanguageEnglish
French
Japanese
Published 03.10.2019
Subjects
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Summary:Provided is a red fluorescent body that is represented by general formula: MSiAlN3 (where M represents at least one element selected from Mg, Ca, Sr, and Ba), a portion of M being substituted with Eu, and that has, as a host crystal, the same crystal structure as that of the CaAlSiN3 crystal phase, wherein the red fluorescent body has a bulk density of 0.70-2.30 g/cm3. Also, provided is a light-emitting element having the red fluorescent body and a semiconductor light-emitting element capable of exciting the red fluorescent body. L'invention concerne un corps fluorescent rouge qui est représenté par la formule générale : MSiAlN3 (dans laquelle M représente au moins un élément choisi parmi le Mg, le Ca, le Sr et le Ba), une partie de M étant substituée par de l'Eu, et qui présente, en tant que cristal hôte, la même structure cristalline que celle de la phase cristalline de CaAlSiN3, le corps fluorescent rouge ayant une masse volumique apparente allant de 0,70 à 2,30 g/cm3. L'invention concerne également un élément électroluminescent ayant le corps fluorescent rouge et un élément électroluminescent semi-conducteur apte à exciter le corps fluorescent rouge. 一般式:MSiAlN3(但しMは、Mg、Ca、Sr、Baから選ばれる少なくとも1種以上の元素)で示され、Mの一部がEuで置換されている、CaAlSiN3結晶相と同一の結晶構造を母体結晶とする赤色蛍光体であって、嵩密度が0.70g/cm3以上2.30g/cm3以下である赤色蛍光体を提供する。また、前記赤色蛍光体と、前記赤色蛍光体の励起が可能な半導体発光素子とを有する発光素子を提供する。
Bibliography:Application Number: WO2019JP11621