Patent ID: 9018665
Filing Date: 2015-04-28
Classification: H01L

Abstract:
1. A semiconductor light emitting device comprising: a stack film including a p-type nitride semiconductor layer, an n-type nitride semiconductor layer, and an active layer provided between the p-type nitride semiconductor layer and the n-type nitride semiconductor layer, the active layer including a multiquantum well structure of a nitride semiconductor layer; an n-electrode connected to the n-type nitride semiconductor layer; a p-electrode connected to the p-type nitride semiconductor layer; and a concave-convex region provided on a surface of the n-type nitride semiconductor layer, the concave-convex region having first concavities and convexities and second concavities and convexities that are smaller than the first concavities and convexities, the first concavities and convexities randomly coexisting with the second concavities and convexities, the first concavities and convexities having height differences of 1 μm to 3 μm, and the second concavities and convexities having height differences of 300 nm or smaller.