Patent ID: 8193548
Filing Date: 2012-06-05
Classification: H01L

Abstract:
1. A light-emitting diode, comprising: an n-type nitride semiconductor layer; a multiple quantum well layer; a p-type nitride semiconductor layer; a window electrode layer; a p-side electrode; and an n-side electrode, wherein: the n-type nitride semiconductor layer, the multiple quantum well layer, the p-type nitride semiconductor layer, the window electrode layer, the p-side electrode, and the n-side electrode are stacked in this order, the n-side electrode is electrically connected to the n-type nitride semiconductor layer, the window electrode layer comprises an n-type single-crystalline ITO transparent film and an n-type single-crystalline ZnO transparent film, the p-type nitride semiconductor layer is in contact with the n-type single-crystalline ITO transparent film, the n-type single-crystalline ITO transparent film is in contact with the n-type single-crystalline ZnO transparent film, the p-side electrode is connected to the n-type single-crystalline ZnO transparent film, the n-type single-crystalline ITO transparent film contains Ga, the n-type single-crystalline ITO transparent film has a molar ratio of Ga/(In+Ga) of not less than 0.08 and not more than 0.5, the n-type single-crystalline ITO transparent film has a thickness of not less than 1.1 nanometers and not more than 55 nanometers, the light-emitting diode further comprises a plurality of single-crystalline ZnO rods formed on the n-type single-crystalline ZnO transparent film, and respective lower portions of the single-crystalline ZnO rods have an inverted taper shape, which sharpens from the single-crystalline n-type ZnO transparent film toward the n-type nitride semiconductor layer.