Optical designs for high-efficacy white-light emitting diodes
    81.
    发明授权
    Optical designs for high-efficacy white-light emitting diodes 有权
    高功率白光发光二极管的光学设计

    公开(公告)号:US08624281B2

    公开(公告)日:2014-01-07

    申请号:US12974621

    申请日:2010-12-21

    IPC分类号: H01L33/00

    摘要: A method for increasing the luminous efficacy of a white light emitting diode (WLED), comprising introducing optically functional interfaces between an LED die and a phosphor, and between the phosphor and an outer medium, wherein at least one of the interfaces between the phosphor and the LED die provides a reflectance for light emitted by the phosphor away from the outer medium and a transmittance for light emitted by the LED die. Thus, a WLED may comprise a first material which surrounds an LED die, a phosphor layer, and at least one additional layer or material which is transparent for direct LED emission and reflective for the phosphor emission, placed between the phosphor layer and the first material which surrounds the LED die.

    摘要翻译: 一种用于增加白光发光二极管(WLED)的发光效率的方法,包括在LED管芯和荧光体之间以及在所述荧光体和外部介质之间引入光学功能界面,其中所述荧光体和 LED管芯提供对由荧光体远离外部介质发出的光的反射率以及由LED管芯发射的光的透射率。 因此,WLED可以包括围绕LED管芯,荧光体层以及放置在荧光体层和第一材料之间的用于直接LED发射和反射用于荧光体发射的透明的至少一个附加层或材料的第一材料 其围绕LED管芯。

    LIGHT EMITTING DIODE FOR DROOP IMPROVEMENT
    85.
    发明申请
    LIGHT EMITTING DIODE FOR DROOP IMPROVEMENT 审中-公开
    发光二极管驱动改进

    公开(公告)号:US20120126198A1

    公开(公告)日:2012-05-24

    申请号:US13283193

    申请日:2011-10-27

    IPC分类号: H01L33/04

    摘要: A light emitting diode (LED) device structure with a reduced Droop effect, and a method for fabricating the LED device structure. The LED is a III-nitride-based LED having an active layer or emitting layer comprised of a multi-quantum-well (MQW) structure, wherein there are eight or more quantum wells (QWs) in the MQW structure, and more preferably, at least nine QWs in the MQW structure. Moreover, the QWs in the MQW structure are grown at temperatures different from barrier layers in the MQW structure, wherein the barrier layers in the MQW structure are grown a temperatures at least 40° C. higher than the QWs in the MQW structure.

    摘要翻译: 具有降低的Droop效应的发光二极管(LED)器件结构以及制造LED器件结构的方法。 LED是具有由多量子阱(MQW)结构构成的有源层或发射层的III族氮化物基LED,其中在MQW结构中存在八个或更多个量子阱(QW),更优选地, MQW结构中至少有九个QW。 此外,MQW结构中的QWs在不同于MQW结构中的阻挡层的温度下生长,其中MQW结构中的阻挡层的生长比MQW结构中的QW高至少40℃。

    III-V NITRIDE-BASED THERMOELECTRIC DEVICE
    89.
    发明申请
    III-V NITRIDE-BASED THERMOELECTRIC DEVICE 有权
    III-V基于氮化物的热电装置

    公开(公告)号:US20110253187A1

    公开(公告)日:2011-10-20

    申请号:US13089138

    申请日:2011-04-18

    IPC分类号: H01L35/22

    CPC分类号: H01L35/22

    摘要: A method to suppress thermal conductivities of nitride films by using stacking faults and/or nano-scale In-composition fluctuation(s). Therefore, the present invention reduces thermal conductivity of nitride while keeping electrical conductivity high. In addition, In composition fluctuations can enhance the Seebeck coefficient through thermionic emission. The present invention further discloses a nitride based (e.g. GaN) thermoelectric lateral device with a short length.

    摘要翻译: 通过使用堆垛层错和/或纳米级组成波动来抑制氮化物膜的热导率的方法。 因此,本发明降低氮化物的导热性,同时保持导电性高。 此外,组成波动可以通过热电子发射增强塞贝克系数。 本发明还公开了一种具有短长度的氮化物基(例如GaN)热电横向装置。