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1.发明授权Alkaline earth metal silicate luminophores and method for improving the long term stability thereof 有权碱土金属硅酸盐发光体及其长期稳定性的改善方法公开(公告)号：US08815120B2
公开(公告)日：2014-08-26
申请号：US13501609
申请日：2010-10-14
CPC分类号： C09K11/02 , C09K11/025 , C09K11/0838 , C09K11/576 , C09K11/7734 , Y10T428/2991 , Y10T428/2993
摘要： The present invention relates to alkaline earth metal silicate luminophores having improved long-term stability and to a corresponding method for improving the long-term stability of alkaline earth metal silicate luminophores. The luminophore according to the invention is a luminophore comprising a base lattice according to the general chemical formula EAxSiyOz, where x, y, z>0. The component EA is formed by one or more alkaline earth metals. An activator, for example Eu2+ or Mn2+, is doped into the base lattice. The luminophore has the fundamental property to absorb radiation in a first wavelength range and emit radiation in a second wavelength range that is different from the first wavelength range. The luminophore is designed in the form of crystals. According to the invention, the surfaces of the crystals of the luminophore are chemically modified such that at least portions of the surfaces thereof are formed by a chemical compound of the general formula EauZ2. The component Z is formed by anions, which can be chemically combined with the EA cations of the luminophore. The variable u is equal to an ion charge of the anions Z. The chemical modification is therefore not a coating.
摘要翻译： 本发明涉及具有改善的长期稳定性的碱土金属硅酸盐发光体以及提高碱土金属硅酸盐发光体的长期稳定性的相应方法。 根据本发明的发光体是发光体，其包含根据一般化学式EAxSiyOz的基本晶格，其中x，y，z> 0。 组分EA由一种或多种碱土金属形成。 激活剂例如Eu 2+或Mn 2+被掺入碱晶格中。 发光体具有吸收第一波长范围内的辐射的基本特性，并且在与第一波长范围不同的第二波长范围内发射辐射。 发光体以晶体的形式设计。 根据本发明，发光体的晶体的表面被化学改性，使得其表面的至少一部分由通式为EauZ2的化合物形成。 组分Z由阴离子形成，其可以与发光体的EA阳离子化学结合。 变量u等于阴离子Z的离子电荷。化学改性因此不是涂层。
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2.发明申请ALKALINE EARTH METAL SILICATE LUMINOPHORES AND METHOD FOR IMPROVING THE LONG TERM STABILITY THEREOF 有权碱金属土金属硅酸盐和改善其长期稳定性的方法公开(公告)号：US20120193579A1
公开(公告)日：2012-08-02
申请号：US13501609
申请日：2010-10-10
CPC分类号： C09K11/02 , C09K11/025 , C09K11/0838 , C09K11/576 , C09K11/7734 , Y10T428/2991 , Y10T428/2993
摘要： The present invention relates to alkaline earth metal silicate luminophores having improved long-term stability and to a corresponding method for improving the long-term stability of alkaline earth metal silicate luminophores. The luminophore according to the invention is a luminophore comprising a base lattice according to the general chemical formula EAxSiyOz, where x, y, z>0. The component EA is formed by one or more alkaline earth metals. An activator, for example Eu2′ or Mn2′, is doped into the base lattice. The luminophore has the fundamental property to absorb radiation in a first wavelength range and emit radiation in a second wavelength range that is different from the first wavelength range. The luminophore is designed in the form of crystals. According to the invention, the surfaces of the crystals of the luminophore are chemically modified such that at least portions of the surfaces thereof are formed by a chemical compound of the general formula EauZ2. The component Z is formed by anions, which can be chemically combined with the EA cations of the luminophore. The variable u is equal to an ion charge of the anions Z. The chemical modification is therefore not a coating.
摘要翻译： 本发明涉及具有改善的长期稳定性的碱土金属硅酸盐发光体以及提高碱土金属硅酸盐发光体的长期稳定性的相应方法。 根据本发明的发光体是发光体，其包含根据一般化学式EAxSiyOz的基本晶格，其中x，y，z> 0。 组分EA由一种或多种碱土金属形成。 激活剂例如Eu2'或Mn2'掺杂到基体晶格中。 发光体具有吸收第一波长范围内的辐射的基本特性，并且在与第一波长范围不同的第二波长范围内发射辐射。 发光体以晶体的形式设计。 根据本发明，发光体的晶体的表面被化学改性，使得其表面的至少一部分由通式为EauZ2的化合物形成。 组分Z由阴离子形成，其可以与发光体的EA阳离子化学结合。 变量u等于阴离子Z的离子电荷。化学改性因此不是涂层。
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