Patent ID: 8709921
Filing Date: 2014-04-29
Classification: C30B,H01L

Abstract:
1. A method for forming a Group III-Nitride film, comprising: providing a substrate having a monocrystalline layer with a first crystal orientation on a first passivation layer and a second passivation layer on the monocrystalline layer; patterning the substrate to form patterned features with elongated sidewalls that have a second crystal orientation, wherein the first passivation layer is exposed in the spaces between the patterned features; growing a plurality of Group III-Nitride films from the exposed elongated sidewalls in the lateral direction, wherein Group III-Nitride is not grown from surfaces covered by the first passivation layer or the second passivation layer; and alternating growth of the Group III-Nitride films in the lateral and vertical directions, causing them to coalesce over the top of the patterned features to form a single Group III-Nitride film with a third crystal orientation in the vertical direction.