Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CERAMIC COMPOSITE MATERIAL FOR LIGHT CONVERSION, PRODUCTION METHOD OF THE SAME, AND LIGHT-EMITTING DEVICE INCLUDING THE SAME
PROBLEM TO BE SOLVED: To provide a ceramic composite material for light conversion, which has excellent heat resistance, durability and the like as a light-converting member of a light-emitting device such as a white light-emitting diode, which facilitates an adjustment of a ratio of light from a light source to fluorescent light, which can reduce color irregularity or variation of radiation light, and which has high external quantum efficiency.SOLUTION: The ceramic composite material for light conversion is constituted by: a fluorescent phase comprising Ln(AlGa)O:Ce (where Ln represents at least one element selected from Y, Lu, Gd and Tb, Ce is an activating element, and x satisfies 0≤x<1); and a light-transmitting phase comprising LaAlO(where y and z satisfy 11≤y≤16.2 and 18≤z≤25.8). The ceramic composite material for light conversion contains Ba and/or Sr by 1.5 mass% or less in terms of oxides with respect to the total amount of the ceramic composite material for light conversion. A production method of the above material, and a light-emitting device including the above material are also provided.SELECTED DRAWING: Figure 3
【課題】 白色発光ダイオード等の発光装置の光変換部材として、耐熱性、耐久性等に優れ、光源の光と蛍光の割合の調節が容易で、放射光の色ムラやバラツキを少なくでき、更に、高い外部量子効率を有する光変換用セラミックス複合材料を提供する。【解決手段】 Ｌｎ３（Ａｌ１−ｘＧａｘ）５Ｏ１２：Ｃｅ（ＬｎはＹ、Ｌｕ、ＧｄおよびＴｂから選択される少なくとも一種の元素であり、Ｃｅは賦活元素であり、ｘは０≦ｘ＜１である）を含む蛍光相と、ＬａＡｌｙＯｚ（ｙは１１≦ｙ≦１６．２であり、ｚは１８≦ｚ≦２５．８である）を含む透光相とから構成される光変換用セラミックス複合材料であって、前記光変換用セラミックス複合材料の総量に対して、酸化物換算で１．５質量％以下のＢａおよび／またはＳｒを含むことを特徴とする光変換用セラミックス複合材料、その製造方法、およびそれを備えた発光装置を提供する。【選択図】 図３
CERAMIC COMPOSITE MATERIAL FOR LIGHT CONVERSION, PRODUCTION METHOD OF THE SAME, AND LIGHT-EMITTING DEVICE INCLUDING THE SAME
PROBLEM TO BE SOLVED: To provide a ceramic composite material for light conversion, which has excellent heat resistance, durability and the like as a light-converting member of a light-emitting device such as a white light-emitting diode, which facilitates an adjustment of a ratio of light from a light source to fluorescent light, which can reduce color irregularity or variation of radiation light, and which has high external quantum efficiency.SOLUTION: The ceramic composite material for light conversion is constituted by: a fluorescent phase comprising Ln(AlGa)O:Ce (where Ln represents at least one element selected from Y, Lu, Gd and Tb, Ce is an activating element, and x satisfies 0≤x<1); and a light-transmitting phase comprising LaAlO(where y and z satisfy 11≤y≤16.2 and 18≤z≤25.8). The ceramic composite material for light conversion contains Ba and/or Sr by 1.5 mass% or less in terms of oxides with respect to the total amount of the ceramic composite material for light conversion. A production method of the above material, and a light-emitting device including the above material are also provided.SELECTED DRAWING: Figure 3
【課題】 白色発光ダイオード等の発光装置の光変換部材として、耐熱性、耐久性等に優れ、光源の光と蛍光の割合の調節が容易で、放射光の色ムラやバラツキを少なくでき、更に、高い外部量子効率を有する光変換用セラミックス複合材料を提供する。【解決手段】 Ｌｎ３（Ａｌ１−ｘＧａｘ）５Ｏ１２：Ｃｅ（ＬｎはＹ、Ｌｕ、ＧｄおよびＴｂから選択される少なくとも一種の元素であり、Ｃｅは賦活元素であり、ｘは０≦ｘ＜１である）を含む蛍光相と、ＬａＡｌｙＯｚ（ｙは１１≦ｙ≦１６．２であり、ｚは１８≦ｚ≦２５．８である）を含む透光相とから構成される光変換用セラミックス複合材料であって、前記光変換用セラミックス複合材料の総量に対して、酸化物換算で１．５質量％以下のＢａおよび／またはＳｒを含むことを特徴とする光変換用セラミックス複合材料、その製造方法、およびそれを備えた発光装置を提供する。【選択図】 図３
CERAMIC COMPOSITE MATERIAL FOR LIGHT CONVERSION, PRODUCTION METHOD OF THE SAME, AND LIGHT-EMITTING DEVICE INCLUDING THE SAME
光変換用セラミックス複合材料、その製造方法、およびそれを備えた発光装置
TOMOI SHOHEI (Autor:in) / YAMANAGA MASATAKA (Autor:in) / KUWAHARA KAZUNORI (Autor:in) / IWASHITA KAZUKI (Autor:in)
16.11.2017
Patent
Elektronische Ressource
Japanisch
Ceramic composite for light conversion and light-emitting device using same
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