| 摘要 |
According to one embodiment, a semiconductor light emitting element includes a stacked body and an optical layer. The stacked body has a major surface and includes a light emitting layer. The optical layer is in contact with the surface and includes a dielectric body, first particles, and second particles. The optical layer includes a first region including the dielectric body and the first particles and does not include the second particles and a second region including the dielectric body and the second particles. A sphere-equivalent diameter of the first particle is not less than 1 nanometer and not more than 100 nanometers. A sphere-equivalent diameter of the second particle is more than 300 nanometers and less than 1000 nanometers. An average refractive index of the first region is larger than a refractive index of the stacked body and smaller than a refractive index of the second particle.
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