Patent ID: 9064808
Filing Date: 2015-06-23
Classification: H01L

Abstract:
1. A method for manufacturing a structure, the method comprising: providing a first layer of crystalline phase material having crystallographic planes with differing epitaxial growth rates, the first layer being oriented such that a first one of the crystallographic planes having the slowest of the epitaxial growth rates extends vertically with respect to a top surface of the first layer of crystalline phase material; forming a mask element overlying the first layer of crystalline phase material; implanting ions into the first layer using the mask element as an implantation mask, thereby converting a region of the first layer into an amorphous phase, the amorphous phase region having a first interface with crystalline phase material underlying the mask element; partially recrystallizing the amorphous phase region into the crystalline phase to form a recrystallized portion adjacent the first interface and leave a remaining portion in the amorphous phase, the remaining portion having a second interface with the recrystallized portion; and selectively removing the remaining portion of the amorphous phase region to leave a first sidewall surface in the first layer at a location defined by the second interface, wherein the first sidewall extends parallel to the first one of the crystallographic planes having the slowest of the epitaxial growth rates.