RARE-EARTH DOPED ALKALINE-EARTH SILICON NITRIDE PHOSPHOR, METHOD FOR PRODUCING AND RADIATION CONVERTING DEVICE COMPRISING SUCH A PHOSPHOR
    12.
    发明公开
    RARE-EARTH DOPED ALKALINE-EARTH SILICON NITRIDE PHOSPHOR, METHOD FOR PRODUCING AND RADIATION CONVERTING DEVICE COMPRISING SUCH A PHOSPHOR 有权
    SE-掺杂ERDALKALISILICIUMNITRIDLEUCHTSTOFF,及其制造方法这种荧光综合辐射转换装置

    公开(公告)号:EP2212400A2

    公开(公告)日:2010-08-04

    申请号:EP08838709.7

    申请日:2008-10-14

    IPC分类号: C09K11/08 C09K11/79 C09K11/80

    摘要: The invention relates to a method of manufacturing a rare-earth doped alkaline-earth silicon nitride phosphor of a stoichiometric composition. Said method comprising the step of selecting one or more compounds each comprising at least one element of the group comprising the rare-earth elements (RE), the alkaline-earth elements (AE), silicon (Si) and nitrogen (N) and together comprising the necessary elements to form the rare-earth doped alkaline-earth silicon nitride phosphor (AE2Si5N8:RE). The method further comprises the step of bringing the compounds at an elevated temperature in reaction for forming the rare-earth doped alkaline-earth silicon nitride phosphor (AE2Si5N8:RE). In such a method normally a small amount of oxygen, whether intentionally or not-intentionally added, will be incorporated in the rare-earth doped alkaline-earth silicon nitride phosphor (AE2Si5N8:RE). According to the invention the creation of defects by formation of a non-stoichiometric oxygen containing phosphor is at least partly prevented by partly substituting for the ions (AE, Si, N) of the alkaline-earth silicon nitride phosphor (AE2Si5N8:RE) suitable further elements of the periodic system by which vacancies are created, filled or annihilated resulting in the formation of a modified alkaline-earth silicon nitride phosphor (AE2Si5N8:RE) having a stoichiometric composition. In this way a modified phosphor is obtained having excellent and stable optical properties. The invention further relates to a modified phosphor obtainable by the above-mentioned method and a radiation converting device comprising such a phosphor.

    LIGHT EMITTING DEVICE WITH A NON-ACTIVATED LUMINESCENT MATERIAL
    14.
    发明授权
    LIGHT EMITTING DEVICE WITH A NON-ACTIVATED LUMINESCENT MATERIAL 有权
    具有非活化发光材料的发光装置

    公开(公告)号:EP1989924B1

    公开(公告)日:2011-05-11

    申请号:EP07702619.3

    申请日:2007-01-08

    IPC分类号: H05B33/10 H05B33/12 H05B33/14

    摘要: The invention relates to a light emitting device (1) having a radiation emitting element, for example a light emitting diode (LED), and a luminescent material (3) which is able to absorb a part of the radiation sent out by the radiation emitting element and to send out light with a wavelength which is different from the wavelength of the absorbed radiation. The device further has diffusing particles (4) which are able to scatter a part of the radiation sent out by the radiation emitting element, and/or to scatter a part of the light sent out by the luminescent material (3). The diffusing particles (4) are of non-activated luminescent material, through which production is simplified.

    摘要翻译: 本发明涉及一种具有辐射发射元件(例如发光二极管(LED))和发光材料(3)的发光设备(1),所述发光材料能够吸收由发射辐射发出的辐射的一部分 并且发出具有不同于所吸收的辐射的波长的波长的光。 该装置还具有散射粒子(4),散射粒子(4)能够散射由辐射发射元件发出的一部分辐射,和/或散射由发光材料(3)发出的一部分光。 漫射粒子(4)是非活化的发光材料,通过它可以简化生产。