Patent ID: 8993409
Filing Date: 2015-03-31
Classification: H01L

Abstract:
1. A method for fabricating an air media layer within a semiconductor optical device providing a substrate, forming a GaN thin film, forming a sacrificial layer, forming the GaN thin film layer on the sacrificial layer and etching to form an air media layer, comprising: providing a substrate; forming a nitride-containing semiconductor on the substrate by using a metal-organic chemical vapor deposition method; forming a sacrificial layer on the nitride-containing semiconductor by using a molecular beam epitaxy method, wherein a temperature range between about 500° C. to 700° C. is used to form the sacrificial layer; forming the GaN thin film layer on the sacrificial layer by using the metal-organic chemical vapor deposition method; and etching to remove a portion of the sacrificial layer, comprising: defining a micro-structural pattern on the GaN thin film layer by using an E-beam lithography method; etching to remove a portion of the GaN thin film layer to form a plurality of micro-structures within the GaN thin film layer by using a inductively coupled plasma reactive ion etching (ICP-RIE) method; and wet etching to remove a portion of sacrificial layer to form an air media layer between the GaN thin film and the nitride-containing semiconductor, so that a residual part of the sacrificial layer and a surrounding space forms an air media layer between the GaN thin film layer and the nitride-containing semiconductor layer.