Patent ID: 8980656
Filing Date: 2015-03-17
Classification: B82Y,H01L,Y10S

Abstract:
1. A method of forming an array of high aspect ratio semiconductor nanostructures, the method comprising: positioning a surface of a stamp comprising a solid electrolyte in opposition to a conductive film disposed on a semiconductor substrate, the surface of the stamp including a pattern of relief features in contact with the conductive film so as to define a film-stamp interface, and the relief features having at least one lateral dimension of about 1 micron or less in size; generating a flux of metal ions across the film-stamp interface; creating a pattern of recessed features in the conductive film complementary to the pattern of relief features on the surface of the stamp, the recessed features extending through an entire thickness of the conductive film to expose the underlying semiconductor substrate and define a conductive pattern on the semiconductor substrate; removing the stamp; selectively removing material immediately below the conductive pattern from the semiconductor substrate; and forming features in the semiconductor substrate having a length-to-width aspect ratio of at least about 5:1, thereby forming an array of high aspect ratio semiconductor nanostructures.