Patent ID: 10816143

Abstract:
An embodiment relates to an ultraviolet light-emitting diode, a method for manufacturing a light-emitting diode, a light-emitting diode package, and a lighting system. The light-emitting diode according to an embodiment includes: a second electrode layer (120); a second conductive type AlGaN-based semiconductor layer (119) on the second electrode layer (120); an active layer (117) on the second conductive type AlGaN-based semiconductor layer (119); a current spreading layer (115) including a first conductive type AlxGa1-xN layer (0<x≤≤0.25) (115c) and disposed on the active layer (117); and a first conductive type AlGaN-based semiconductor layer (114) disposed on the current spreading layer (115). A composition x of Al in the first conductive type AlxGa1-xN layer (0<x≤≤0.25) (115c) may be reduced in a direction of the active layer (117) from the first conductive type first AlGaN-based semiconductor layer (114).