Abstract: Disclosed according to an embodiment is a semiconductor device comprising: a semiconductor structure including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer disposed between the first conductive semiconductor layer and the second conductive semiconductor layer; a first electrode electrically connected to the first conductive semiconductor layer; and a second electrode electrically connected to the second conductive semiconductor layer, wherein the semiconductor structure includes a third conductive semiconductor layer disposed between the second conductive semiconductor layer and the second electrode, the first conductive semiconductor layer includes a first dopant, the second conductive semiconductor layer includes a second dopant, the third conductive semiconductor layer includes the first dopant and the second dopant, and the concentration ratio between the first dopant and the second dopant included in the third conductive semiconductor layer ranges f

Abstract: An embodiment relates to a semiconductor device, a semiconductor device package, and a method for producing a semiconductor device, the semiconductor device comprising a light emitting structure including a first conductivity type semiconductor layer, a second conductivity type semiconductor layer, an active layer disposed between the first conductivity type semiconductor layer and the second conductivity type semiconductor layer, and an intermediate layer disposed between the first conductivity type semiconductor layer and the active layer, or disposed inside the first conductivity type semiconductor layer, wherein the first conductivity type semiconductor layer, the intermediate layer, the active layer, and the second conductivity type semiconductor layer include aluminum, and the intermediate layer includes a first intermediate layer having a lower aluminum composition than that of the first conductivity type semiconductor layer.

Abstract: An embodiment relates to a semiconductor device, a semiconductor device package, and a method for producing a semiconductor device, the semiconductor device comprising a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer, an active layer disposed between the first conductive semiconductor layer and the second conductive semiconductor layer, and an intermediate layer disposed between the first conductive semiconductor layer and the active layer, or disposed inside the first conductive semiconductor layer, wherein the first conductive semiconductor layer, the intermediate layer, the active layer, and the second conductive semiconductor layer include aluminum, and the intermediate layer includes a first intermediate layer having a lower aluminum composition than that of the first conductive semiconductor layer.

Abstract: A semiconductor device includes a semiconductor structure including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer provided between the first conductive semiconductor layer and the second conductive semiconductor layer, and a semiconductor device package including the semiconductor device. The active layer includes a plurality of barrier layers and a plurality of well layers. The second conductive semiconductor layer includes a conductive second semiconductor layer and a conductive first semiconductor layer provided on the conductive second semiconductor layer. The conductive second semiconductor layer has a higher aluminum composition than the well layers, and the conductive first semiconductor layer has a lower aluminum composition than the well layers.

Abstract: An embodiment discloses a semiconductor device including a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer disposed between the first conductive semiconductor layer and the second conductive semiconductor layer; a first electrode electrically connected with the first conductive semiconductor layer; and a second electrode electrically connected with the second conductive semiconductor layer, and a semiconductor device package including the same. The second conductive semiconductor layer includes a first surface on which the second electrode is disposed. The second conductive semiconductor layer has a ratio of a second shortest distance W2, which is a distance from the first surface to a second point, to a first shortest distance W1, which is a distance from the first surface to a first point, (W2:W1) ranging from 1:1.25 to 1:100.

Abstract: A semiconductor device includes a semiconductor structure including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer provided between the first conductive semiconductor layer and the second conductive semiconductor layer, and a semiconductor device package including the semiconductor device. The active layer includes a plurality of barrier layers and a plurality of well layers. The second conductive semiconductor layer includes a conductive second semiconductor layer and a conductive first semiconductor layer provided on the conductive second semiconductor layer. The conductive second semiconductor layer has a higher aluminum composition than the well layers, and the conductive first semiconductor layer has a lower aluminum composition than the well layers.

Abstract: A semiconductor device according to an embodiment comprises: a substrate; a buffer layer provided on the substrate; a first conductivity type semiconductor layer provided on the buffer layer; a second conductivity type semiconductor layer; a light emitting structure, provided between the first conductivity type semiconductor layer and the second conductivity type semiconductor layer, comprising an active layer which emits ultraviolet light; and a plurality of air voids provided within the buffer layer, wherein the air voids can be formed to have two or more inclined surfaces.

Abstract: A semiconductor device according to an embodiment comprises: a substrate; a buffer layer provided on the substrate; a first conductivity type semiconductor layer provided on the buffer layer; a second conductivity type semiconductor layer; a light emitting structure, provided between the first conductivity type semiconductor layer and the second conductivity type semiconductor layer, comprising an active layer which emits ultraviolet light; and a plurality of air voids provided within the buffer layer, wherein the air voids can be formed to have two or more inclined surfaces.

Abstract: A semiconductor device includes a semiconductor structure including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer provided between the first conductive semiconductor layer and the second conductive semiconductor layer, and a semiconductor device package including the semiconductor device. The active layer includes a plurality of barrier layers and a plurality of well layers. The second conductive semiconductor layer includes a conductive second semiconductor layer and a conductive first semiconductor layer provided on the conductive second semiconductor layer. The conductive second semiconductor layer has a higher aluminum composition than the well layers, and the conductive first semiconductor layer has a lower aluminum composition than the well layers.

Abstract: A light emitting device includes a light emitting structure including a first conductive type semiconductor layer, an active layer and a second conductive type semiconductor layer; a multi-contact layer disposed on at least a predetermined region of the second conductive type semiconductor layer, the multi-contact layer including at least one pair-structure configured of a first layer including InGaN having a dopant doped thereon and a second layer including GaN having a different dopant doped thereon; and a first electrode and a second electrode to provide currents to the first conductive type semiconductor layer and the second conductive type semiconductor layer, respectively.

Abstract: A light emitting device includes a light emitting structure including a first conductive type semiconductor layer, an active layer and a second conductive type semiconductor layer; a multi-contact layer disposed on at least a predetermined region of the second conductive type semiconductor layer, the multi-contact layer including at least one pair-structure configured of a first layer including InGaN having a dopant doped thereon and a second layer including GaN having a different dopant doped thereon; and a first electrode and a second electrode to provide currents to the first conductive type semiconductor layer and the second conductive type semiconductor layer, respectively.