Patent ID: 9039834
Filing Date: 2015-05-26
Classification: C30B,H01L

Abstract:
1. A method of growing non-polar Gallium Nitride (GaN), comprising: growing GaN, including a non-polar a-plane GaN film, on an r-plane of a sapphire substrate using metalorganic chemical vapor deposition (MOCVD) and growth conditions including growth temperature, growth pressure, and a V/III ratio, including: the non-polar a-plane GaN film has: a crystalline quality characterized by an on-axis Omega rocking curve having a full-width half-maximum (FWHM) of no more than 0.29° (1037″) and an off-axis Omega rocking curve having a FWHM of no more than 0.46° (1659″), a threading dislocation density of no more than 2.6×10 a threading dislocation line direction parallel to a film normal of the non-polar a-plane GaN film, stacking faults aligned perpendicular to a c-axis of the non-polar a-plane GaN film with a stacking fault density of no more than 3.8×10 a top surface with a surface roughness of no more than 2.6 nanometers (nm) over an area of 5 micrometers by 5 micrometers, and surface pitting on a sub-micron scale with a density within an order of magnitude of the threading dislocation density.