Patent ID: 8257993

Claim:
A method of fabricating a light emitting device, the method comprising: forming a first conductive semiconductor layer; forming an active layer on the first conductive semiconductor layer; and forming a second conductive semiconductor layer on the active layer, wherein the forming of the active layer comprises: forming an InGaN well layer on the first conductive semiconductor layer at a first temperature; forming a first GaN barrier layer on the InGaN well layer by increasing a temperature from the first temperature to a second temperature that is higher than the first temperature; forming an AlGaN layer on the first GaN barrier layer at the second temperature; and forming a second GaN barrier layer on the AlGaN layer by increasing a temperature from the second temperature to a third temperature that is higher than the second temperature, wherein the active layer comprises a plurality of structures, each of the plurality of structures having sequentially and directly stacked InGaN well layer, first GaN barrier layer, AlGaN layer, and second GaN barrier layer.