A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LIGHT-WAVELENGTH CONVERSION MEMBER AND LIGHT-EMITTING DEVICE
PROBLEM TO BE SOLVED: To provide a light-wavelength conversion member and a light-emitting device that can have both high fluorescence intensity and high color homogeneity.SOLUTION: A light-emitting device 1 is provided with a housing 3, a light-emitting device 5, and light-wavelength conversion member 9. The light-wavelength conversion member 9 comprises a ceramic sintered body as a polycrystalline material in which a crystal particle AlOand a crystal particle having a component represented by chemical formula ABO:Ce are included as main components. More particularly, A and B each in ABOis at least one element selected from the element group below. The at least one element selected from the element group below is distributed between each crystal particle interior and crystal grain boundaries of the ceramic sintered body, and for the elements distributed at each crystal particle interior and crystal grain boundary, the density at the crystal grain boundary is higher than that in each crystal particle interior. A is Sc, Y, or lanthanoid (excluding Ce); and B is Al or Ga.SELECTED DRAWING: Figure 1
【課題】高い蛍光強度と高い色均質性とを両立できる光波長変換部材及び発光装置を提供すること。【解決手段】発光装置１は、容器３と発光素子５と光波長変換部材９とを備えている。光波長変換部材９は、Ａｌ２Ｏ３結晶粒子と化学式Ａ３Ｂ５Ｏ１２：Ｃｅで表される成分の結晶粒子とを主成分とする多結晶体であるセラミックス焼結体から構成された光波長変換部材（９）である。詳しくは、Ａ３Ｂ５Ｏ１２中のＡとＢは、下記元素群から選択される少なくとも１種の元素であり、且つ、セラミックス焼結体の各結晶粒子内と結晶粒界との間に、下記元素群から選択される少なくとも１種の元素が分布するとともに、各結晶粒子内と結晶粒界とに分布した元素は、各結晶粒子内の濃度より結晶粒界の濃度が高い。Ａ：Ｓｃ、Ｙ、ランタノイド（Ｃｅは除く）Ｂ：Ａｌ、Ｇａ【選択図】図１
LIGHT-WAVELENGTH CONVERSION MEMBER AND LIGHT-EMITTING DEVICE
PROBLEM TO BE SOLVED: To provide a light-wavelength conversion member and a light-emitting device that can have both high fluorescence intensity and high color homogeneity.SOLUTION: A light-emitting device 1 is provided with a housing 3, a light-emitting device 5, and light-wavelength conversion member 9. The light-wavelength conversion member 9 comprises a ceramic sintered body as a polycrystalline material in which a crystal particle AlOand a crystal particle having a component represented by chemical formula ABO:Ce are included as main components. More particularly, A and B each in ABOis at least one element selected from the element group below. The at least one element selected from the element group below is distributed between each crystal particle interior and crystal grain boundaries of the ceramic sintered body, and for the elements distributed at each crystal particle interior and crystal grain boundary, the density at the crystal grain boundary is higher than that in each crystal particle interior. A is Sc, Y, or lanthanoid (excluding Ce); and B is Al or Ga.SELECTED DRAWING: Figure 1
【課題】高い蛍光強度と高い色均質性とを両立できる光波長変換部材及び発光装置を提供すること。【解決手段】発光装置１は、容器３と発光素子５と光波長変換部材９とを備えている。光波長変換部材９は、Ａｌ２Ｏ３結晶粒子と化学式Ａ３Ｂ５Ｏ１２：Ｃｅで表される成分の結晶粒子とを主成分とする多結晶体であるセラミックス焼結体から構成された光波長変換部材（９）である。詳しくは、Ａ３Ｂ５Ｏ１２中のＡとＢは、下記元素群から選択される少なくとも１種の元素であり、且つ、セラミックス焼結体の各結晶粒子内と結晶粒界との間に、下記元素群から選択される少なくとも１種の元素が分布するとともに、各結晶粒子内と結晶粒界とに分布した元素は、各結晶粒子内の濃度より結晶粒界の濃度が高い。Ａ：Ｓｃ、Ｙ、ランタノイド（Ｃｅは除く）Ｂ：Ａｌ、Ｇａ【選択図】図１
LIGHT-WAVELENGTH CONVERSION MEMBER AND LIGHT-EMITTING DEVICE
光波長変換部材及び発光装置
KATSU YUSUKE (author) / MOGI JUN (author) / TAKAHISA SHOHEI (author) / ITO TSUNEYUKI (author) / MITSUOKA TAKESHI (author)
2018-05-10
Patent
Electronic Resource
Japanese
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