ULTRAVIOLET SEMICONDUCTOR LIGHT-EMITTING ELEMENT
    2.
    发明申请
    ULTRAVIOLET SEMICONDUCTOR LIGHT-EMITTING ELEMENT 有权
    ULTRAVIOLET半导体发光元件

    公开(公告)号:US20130082297A1

    公开(公告)日:2013-04-04

    申请号:US13704679

    申请日:2011-06-17

    IPC分类号: H01L33/60

    摘要: An ultraviolet semiconductor light-emitting element comprises a light-emitting layer which is arranged between an n-type nitride semiconductor layer and a p-type nitride semiconductor layer, an n-electrode that is in contact with the n-type nitride semiconductor layer, and a p-electrode that is in contact with the p-type nitride semiconductor layer. The p-type nitride semiconductor layer is provided with a p-type contact layer that has a band gap smaller than that of the light-emitting layer and is in ohmic contact with the p-electrode. A depressed part is formed in a reverse side surface of a surface of the p-type nitride semiconductor layer that faces the light-emitting layer so as to avoid a formation region on which the p-electrode is formed. A reflective film that reflects ultraviolet light emitted from the light-emitting layer is formed on an inner bottom surface of the depressed part.

    摘要翻译: 紫外线半导体发光元件包括布置在n型氮化物半导体层和p型氮化物半导体层之间的发光层,与n型氮化物半导体层接触的n电极, 以及与p型氮化物半导体层接触的p电极。 p型氮化物半导体层具有p型接触层,该p型接触层的带隙比发光层的带隙小,与p电极欧姆接触。 在p型氮化物半导体层的面向发光层的表面的背面形成凹部,以避免形成有p电极的形成区域。 在凹陷部的内底面形成反射从发光层发出的紫外线的反射膜。

    Ultraviolet semiconductor light-emitting element that emits ultraviolet light from one surface side
    4.
    发明授权
    Ultraviolet semiconductor light-emitting element that emits ultraviolet light from one surface side 有权
    从一个表面侧发射紫外光的紫外线半导体发光元件

    公开(公告)号:US09070847B2

    公开(公告)日:2015-06-30

    申请号:US13704679

    申请日:2011-06-17

    摘要: An ultraviolet semiconductor light-emitting element comprises a light-emitting layer which is arranged between an n-type nitride semiconductor layer and a p-type nitride semiconductor layer, an n-electrode that is in contact with the n-type nitride semiconductor layer, and a p-electrode that is in contact with the p-type nitride semiconductor layer. The p-type nitride semiconductor layer is provided with a p-type contact layer that has a band gap smaller than that of the light-emitting layer and is in ohmic contact with the p-electrode. A depressed part is formed in a reverse side surface of a surface of the p-type nitride semiconductor layer that faces the light-emitting layer so as to avoid a formation region on which the p-electrode is formed. A reflective film that reflects ultraviolet light emitted from the light-emitting layer is formed on an inner bottom surface of the depressed part.

    摘要翻译: 紫外线半导体发光元件包括布置在n型氮化物半导体层和p型氮化物半导体层之间的发光层,与n型氮化物半导体层接触的n电极, 以及与p型氮化物半导体层接触的p电极。 p型氮化物半导体层具有p型接触层,该p型接触层的带隙比发光层的带隙小,与p电极欧姆接触。 在p型氮化物半导体层的面向发光层的表面的背面形成凹部,以避免形成有p电极的形成区域。 在凹陷部的内底面形成反射从发光层发出的紫外线的反射膜。

    Nitride semi-conductive light emitting device
    7.
    发明授权
    Nitride semi-conductive light emitting device 有权
    氮化物半导体发光器件

    公开(公告)号:US08445938B2

    公开(公告)日:2013-05-21

    申请号:US12933927

    申请日:2009-03-23

    IPC分类号: H01L33/00

    摘要: The nitride semi-conductive light emitting layer in this invention comprises a single crystal substrate 1 for epitaxial growth, a first buffer layer 2, an n-type nitride semi-conductive layer 3, a second buffer layer 4, a third buffer layer 5, a light emitting layer 6, and a p-type nitride semi-conductive layer 7. The first buffer layer 2 is laminated to a top side of the single crystal substrate 1. The n-type nitride semi-conductive layer 3 is laminated to a top side of the first buffer layer 2. The third buffer layer 5 is laminated to a top side of the n-type nitride semi-conductive layer 3 with the second buffer layer 4 being interposed therebetween. The light emitting layer 6 is laminated to a top side of the third buffer layer 5. The p-type nitride semi-conductive layer 7 is laminated to a top side of the light emitting layer 6. The third buffer layer 5 serves as a planarized base for growth of the light emitting layer 6 so as to reduce a threading dislocation and a residual distortion in the light emitting layer 6. This nitride semi-conductive light emitting device reduces a piezoelectric field in the light emitting layer by exploiting carriers generated in the third buffer layer 5. The third buffer layer 5 is doped with an Si impurity serving as a donor.

    摘要翻译: 本发明的氮化物半导体发光层包括用于外延生长的单晶衬底1,第一缓冲层2,n型氮化物半导体层3,第二缓冲层4,第三缓冲层5, 发光层6和p型氮化物半导体层7.第一缓冲层2层压到单晶衬底1的顶侧。将n型氮化物半导体层3层压到 第一缓冲层2的顶面。第三缓冲层5层叠在n型氮化物半导体层3的顶侧,第二缓冲层4插入其间。 发光层6层压到第三缓冲层5的顶侧.p型氮化物半导体层7层压到发光层6的顶侧。第三缓冲层5用作平坦化 从而减少发光层6中的穿透位错和残留变形。该氮化物半导体发光器件通过利用在该发光层6中生成的载流子来减少发光层中的压电场。 第三缓冲层5掺杂有作为供体的Si杂质。