SINGLE-CRYSTAL PHOSPHOR AND LIGHT-EMITTING DEVICE
    11.
    发明公开
    SINGLE-CRYSTAL PHOSPHOR AND LIGHT-EMITTING DEVICE 审中-公开
    EINKRISTALLINER磷酸盐在LICHTEMITTIERENDE VORRICHTUNG

    公开(公告)号:EP3061801A1

    公开(公告)日:2016-08-31

    申请号:EP14855994.1

    申请日:2014-10-20

    IPC分类号: C09K11/80 H01L33/50

    摘要: As one of purposes, the present invention provides: a single-crystal phosphor which can exhibit excellent properties under high-temperature conditions; and a light-emitting device in which the phosphor is used. As one embodiment, a single-crystal phosphor is provided, which has a chemical composition represented by the compositional formula: (Y 1-x-y-z Lu x Gd y Ce z ) 3+a Al 5-a O 12 ( 0 ≤ x ≤ 0.9994 , 0 ≤ y ≤ 0.0669 , 0.0002 ≤ z ≤ 0.0067 , -0.016 ≤ a ≤ 0.315 ).

    摘要翻译: 作为目的之一,本发明提供:在高温条件下可以表现出优异性能的单晶荧光体; 以及使用荧光体的发光装置。 作为一个实施方案,提供了具有由组成式表示的化学组成的单晶荧光体:(Y 1-xy z Lu x Gd y Ce z)3 + a Al 5-a O 12(0‰¤x‰ ¤0.9994,0‰¤‰0.0669,0.0002‰¤‰0.0067,-0.016‰¤‰¤0.315)。

    WAVELENGTH CONVERSION MEMBER
    14.
    发明公开

    公开(公告)号:EP4039770A1

    公开(公告)日:2022-08-10

    申请号:EP20871164.8

    申请日:2020-09-30

    摘要: Provided is a wavelength conversion member 1 which comprises a substrate 10 and a wavelength conversion layer 11 that includes a phosphor particle group 12 and a sealing member 13 for sealing the phosphor particle group 12 and that is provided on the substrate 10 directly or with another layer therebetween, wherein: a predetermined region, in which the area ratio of the cross-section of the phosphor particle group 12 is 50% or more, is included in an arbitrary cross-section parallel to the thickness direction of the wavelength conversion layer 11; when the thickness of the wavelength conversion layer 11 is at least 50 µm, the predetermined region is a rectangular region that has a thickness of 50 µm from the bottom surface of the wavelength conversion layer 11 and a width of 700 µm; and when the thickness of the wavelength conversion layer 11 is less than 50 µm, the predetermined region is a rectangular region that has the same thickness as that of the wavelength conversion layer 11 and a width of 700 µm.

    LIGHT-EMITTING DEVICE
    15.
    发明公开
    LIGHT-EMITTING DEVICE 有权
    发光装置

    公开(公告)号:EP2634234A1

    公开(公告)日:2013-09-04

    申请号:EP11836463.7

    申请日:2011-10-28

    IPC分类号: C09K11/80 H01L33/50

    摘要: [Problem] To provide a light-emitting device which does not undergo the deterioration in luminous efficiency associated with the long-term use.
    [Solution] A light-emitting device (1) comprises a light-emitting element (10) which can emit blue light and a phosphor (2) which is composed of a single kind of single crystal and can emit yellow light upon the irradiation with the light emitted from the light-emitting element (10) which serves as excitation light. Thus, it becomes possible to prevent the deterioration in luminous efficiency associated with the deterioration in a binder or the like compared with a light-emitting device which utilizes multiple kinds of granular phosphors, because any binder for binding phosphors to each other is not required in the light-emitting device (1).

    摘要翻译: 本发明的目的在于提供一种不会伴随长期使用而发光效率降低的发光装置。 发光装置(1)包括能够发射蓝光的发光元件(10)和由单种单晶构成并且可以在照射时发射黄光的磷光体(2) 从发光元件(10)发射的用作激发光的光。 因此,与使用多种粒状荧光体的发光装置相比,可以防止伴随着粘合剂等的劣化的发光效率的降低,因为不需要任何用于彼此粘合荧光体的粘合剂 发光装置(1)。

    USE OF RARE EARTH FLUORIDE SINGLE CRYSTAL IN MAGNETIC REFRIGERATION

    公开(公告)号:EP4450896A1

    公开(公告)日:2024-10-23

    申请号:EP23794836.9

    申请日:2023-03-16

    IPC分类号: F25B21/00 C01F17/36

    摘要: The present invention relates to the field of magnetic functional materials. The present invention discloses a use of a rare earth fluoride single crystal in magnetic refrigeration, a magnetic refrigeration method and a magnetic refrigeration device. A magnetocaloric material of the series is lithium rare earth fluoride, with the chemical formula of LiREF 4 , wherein RE is one or more of rare earth elements gadolinium, terbium, dysprosium, holmium, erbium, thulium and ytterbium. A magnetocaloric material single crystal of the series has extremely strong magnetic anisotropy. By applying a varying magnetic field of 0-20kOe along the easy magnetization axis direction of the magnetocaloric material, LiGdF 4 , LiTbF 4 , LiHoF 4 , LiDyF 4 , LiErF 4 , LiYbF 4 and LiTmF 4 obtained isothermal magnetic entropy changes of 50.35J·kg -1 ·K -1 , 21.12J·kg -1 ·K -1 , 24.98J·kg -1 ·K -1 , 24.45J·kg -1 ·K -1 , 21.95J·kg- 1 ·K -1 , 14.7J·kg -1 ·K -1 and 0.692J·kg -1 ·K -1 , respectively, at 1.8K, 4K, 4K, 1.8K, 1.8K, 1.8K, and 18K. Wherein, the thermal conductivity of LiTbF 4 and LiErF 4 reaches 50W·K -1 ·m -1 at 25K.