Patent ID: 9224846
Filing Date: 2015-12-29
Classification: H01L

Abstract:
1. A method for fabricating a semiconductor device, comprising: forming a buffer layer on a substrate; forming a Gallium Nitride (GaN) layer on the buffer layer; forming an Aluminum Gallium Nitride (AlGaN) layer on the GaN layer; forming a p-GaN layer on the AlGaN layer; etching portions of the p-GaN layer, wherein each portion of the p-GaN layer is spaced from each other; forming a source electrode and a drain electrode on a portion of the AlGaN layer corresponding to etched portions of the p-GaN layer; oxidizing the p-GaN layer, except for a partial region, for forming a passivation layer based on a photoelectrochemical (PEC); and forming a gate electrode on the partial region of the p-GaN layer that is not oxidized.