Patent ID: 7456034
Filing Date: 2008-11-25
Classification: B82Y,H01L,H01S

Abstract:
1. A method for fabricating a nitride semiconductor device which includes a well layer provided above a substrate, a plurality of barrier layers sandwiching the well layer to construct a quantum well, and a first thin film layer provided on one of the plurality of barrier layers and under the well layer, the method comprising: the step (a) of depositing nitride semiconductor containing Al and Ga above the substrate at a substrate temperature T the step (b) of depositing, on one said barrier layer, nitride semiconductor having a smaller band gap energy than one said barrier layer, thereby forming the first thin film layer; the step (c) of depositing nitride semiconductor on the first thin film layer at a substrate temperature T the step (d) of depositing nitride semiconductor on or above the well layer at a substrate temperature T wherein the T