| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance light extraction efficiency in a semiconductor light-emitting element. <P>SOLUTION: The light-emitting element includes a substrate and a semiconductor layer including a light-emitting layer laminated on the substrate. A refractive index of the substrate and a refractive index of the semiconductor layer are different from each other, the substrate is a sapphire substrate, a surface on which the semiconductor layer is laminated is (0001) surface, and unevenness having a tilt side surface parallel in 1-100 direction is formed on the surface of the substrate on which the semiconductor layer is laminated, and a tilt angle θ of the tilt side surface is larger than 30° and smaller than 60° with respect to the (0001) surface of the substrate. <P>COPYRIGHT: (C)2010,JPO&INPIT |
