Patent ID: 8933432
Filing Date: 2015-01-13
Classification: H01L

Abstract:
1. A light-emitting device manufactured with use of a compound semiconductor substrate comprising at least: a p-type cladding layer; a multiple-active layer portion in which three or more active layers made of (Al x Ga 1-x ) y In 1-y P (0≦x≦0.6, 0.4≦y≦0.6) and two or more barrier layers having a higher Al content rate x than the active layers are alternately laminated; and an n-type cladding layer, wherein the barrier layer on a side close to the p-type cladding layer has a smaller band gap than that of the barrier layer on a side close to the n-type cladding layer in the barrier layer, and the compound semiconductor substrate has a superlattice barrier layer between the multiple-active layer portion and the n-type cladding layer or in the n-type cladding layer.