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    • 4. 发明授权
    • Light emitting element
    • 发光元件
    • US08674384B2
    • 2014-03-18
    • US13048046
    • 2011-03-15
    • Takashi KataokaYukie NishikawaHironori Yamasaki
    • Takashi KataokaYukie NishikawaHironori Yamasaki
    • H01L33/00
    • H01L33/14H01L33/22
    • According to one embodiment, a light emitting element includes a light emitting layer, a cladding layer, a current spreading layer, a second layer, and an electrode. The light emitting layer is capable of emitting emission light. The current spreading layer includes a surface processed layer and a first layer. The surface processed layer has a surface including convex portions and bottom portions provided adjacent to the convex portions. The first layer is provided between the surface processed layer and the cladding layer. The second layer is provided between the surface processed layer and the cladding layer and includes a region having an impurity concentration higher than an impurity concentration of the current spreading layer. The electrode is provided in a region of the surface of the surface processed layer where the convex portions and the bottom portions are not provided.
    • 根据一个实施例,发光元件包括发光层,包覆层,电流扩散层,第二层和电极。 发光层能够发射发光。 电流扩散层包括表面处理层和第一层。 表面处理层具有包括与凸部相邻设置的凸部和底部的表面。 第一层设置在表面处理层和包覆层之间。 第二层设置在表面处理层和包覆层之间,并且包括杂质浓度高于电流扩散层的杂质浓度的区域。 电极设置在表面处理层的没有设置凸部和底部的表面的区域中。