Patent ID: 8357924
Filing Date: 2013-01-22
Classification: H01L

Abstract:
1. A light emitting diode, comprising: an n-type contact layer; a p-type contact layer disposed on the n-type contact layer; an active region comprising a multi-quantum well structure, the active region disposed between the n-type contact layer and the p-type contact layer; and a spacer layer disposed between the n-type contact layer and the active region, wherein the spacer layer is doped with n-type impurities, and the n-type impurity doping concentration is relatively higher than the impurity doping concentration of the n-type contact layer, and the active region is undoped, and wherein the spacer layer comprises In, the content of In being lower than that of indium (In) in a barrier layer of the active region and higher than that of In in a well layer of the active region.