Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CERAMIC COMPOSITE, LIGHT-EMITTING DEVICE, AND METHOD FOR MANUFACTURING CERAMIC COMPOSITE
To provide a ceramic composite, a light emitting device, and a method for manufacturing the ceramic composite capable of suppressing variations in the color tone of light emission.SOLUTION: A ceramic composite includes: a first crystal phase including an activation element and a first rare earth aluminate phosphor containing a first rare earth element different from the activation element; and a second crystalline phase including aluminum oxide, wherein the content of the first crystal phase is in a range of 5 volume% or more and 40 volume% or less with respect to the total volume, the content of the second crystalline phase is 57 volume% or more and 95 volume% or less, an average value of a second crystal diameter of the second crystalline phase measured under specific measurement conditions is 12 μm or less, and a QD value is 0.5 or less, which is represented by QD=(D75-D25)/(D75+D25) in a case where values of the second crystal diameter, when integrated values of the second crystal diameter in its grain size distribution curve from the small diameter side are 25% and 75%, are represented as D25 and D75, respectively.SELECTED DRAWING: Figure 6A
【課題】発光の色調のばらつきを抑制することができるセラミックス複合体、発光装置及びセラミックス複合体の製造方法を提供する。【解決手段】賦活元素と前記賦活元素とは異なる第１希土類元素を含有する第１希土類アルミン酸塩蛍光体を含む第１結晶相と、酸化アルミニウムを含む第２結晶相と、を含み、全体量に対して、前記第１結晶相の含有量が５体積％以上４０体積％以下の範囲内であり、前記第２結晶相の含有量が５７体積％以上９５体積％以下の範囲内であり、特定の測定条件で測定した前記第２結晶相の第２結晶径の平均値が１２μｍ以下であり、前記第２結晶径の粒度分布曲線の小径側からの積算値が２５％及び７５％のときの第２結晶径の値をＤ２５及びＤ７５と表記したときの、ＱＤ＝（Ｄ７５－Ｄ２５）／（Ｄ７５＋Ｄ２５）で表されるＱＤ値が０．５以下であるセラミックス複合体である。【選択図】図６Ａ
CERAMIC COMPOSITE, LIGHT-EMITTING DEVICE, AND METHOD FOR MANUFACTURING CERAMIC COMPOSITE
To provide a ceramic composite, a light emitting device, and a method for manufacturing the ceramic composite capable of suppressing variations in the color tone of light emission.SOLUTION: A ceramic composite includes: a first crystal phase including an activation element and a first rare earth aluminate phosphor containing a first rare earth element different from the activation element; and a second crystalline phase including aluminum oxide, wherein the content of the first crystal phase is in a range of 5 volume% or more and 40 volume% or less with respect to the total volume, the content of the second crystalline phase is 57 volume% or more and 95 volume% or less, an average value of a second crystal diameter of the second crystalline phase measured under specific measurement conditions is 12 μm or less, and a QD value is 0.5 or less, which is represented by QD=(D75-D25)/(D75+D25) in a case where values of the second crystal diameter, when integrated values of the second crystal diameter in its grain size distribution curve from the small diameter side are 25% and 75%, are represented as D25 and D75, respectively.SELECTED DRAWING: Figure 6A
【課題】発光の色調のばらつきを抑制することができるセラミックス複合体、発光装置及びセラミックス複合体の製造方法を提供する。【解決手段】賦活元素と前記賦活元素とは異なる第１希土類元素を含有する第１希土類アルミン酸塩蛍光体を含む第１結晶相と、酸化アルミニウムを含む第２結晶相と、を含み、全体量に対して、前記第１結晶相の含有量が５体積％以上４０体積％以下の範囲内であり、前記第２結晶相の含有量が５７体積％以上９５体積％以下の範囲内であり、特定の測定条件で測定した前記第２結晶相の第２結晶径の平均値が１２μｍ以下であり、前記第２結晶径の粒度分布曲線の小径側からの積算値が２５％及び７５％のときの第２結晶径の値をＤ２５及びＤ７５と表記したときの、ＱＤ＝（Ｄ７５－Ｄ２５）／（Ｄ７５＋Ｄ２５）で表されるＱＤ値が０．５以下であるセラミックス複合体である。【選択図】図６Ａ
CERAMIC COMPOSITE, LIGHT-EMITTING DEVICE, AND METHOD FOR MANUFACTURING CERAMIC COMPOSITE
セラミックス複合体、発光装置及びセラミックス複合体の製造方法
OGURI HIROSHI (Autor:in) / HIRAI TOSHIYUKI (Autor:in)
23.06.2022
Patent
Elektronische Ressource
Japanisch
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