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    • 4. 发明申请
    • LIGHT EMITTING DEVICE, LIGHT EMITTING DEVICE PACKAGE AND LIGHTING SYSTEM
    • 发光装置,发光装置包装和照明系统
    • US20140054542A1
    • 2014-02-27
    • US13969811
    • 2013-08-19
    • Young Hun HANRak Jun ChoiJeong Tak Oh
    • Young Hun HANRak Jun ChoiJeong Tak Oh
    • H01L33/12
    • H01L33/12H01L33/06H01L33/32H01L2224/48091H01L2924/00014
    • The light emitting device includes a first conductive semiconductor layer; a second conductive semiconductor layer on the first conductive semiconductor layer; and an active layer between the first and second conductive semiconductor layers. The active layer includes a plurality of well layers and a plurality of barrier layers, wherein the well layers include a first well layer and a second well layer adjacent to the first well layer. The barrier layers include a first barrier layer disposed between the first and second well layers, and the first barrier layer includes a plurality of semiconductor layers having an energy bandgap wider than an energy bandgap of the first well layer. At least two layers of the plurality of semiconductor layers are adjacent to the first and second well layers, and have aluminum contents greater than that of the other layer.
    • 发光器件包括第一导电半导体层; 在所述第一导电半导体层上的第二导电半导体层; 以及第一和第二导电半导体层之间的有源层。 有源层包括多个阱层和多个势垒层,其中阱层包括与第一阱层相邻的第一阱层和第二阱层。 阻挡层包括设置在第一阱层和第二阱层之间的第一势垒层,并且第一势垒层包括具有比第一阱层的能带隙宽的能带隙的多个半导体层。 多个半导体层中的至少两层与第一和第二阱层相邻,并且铝含量大于另一层的铝含量。