Patent ID: 8835255
Filing Date: 2014-09-16
Classification: B82Y,H01L

Abstract:
1. A method, comprising: providing a semiconductor structure comprising a substrate and a nanowire above said substrate, the nanowire comprising a first semiconductor material and extending in a vertical direction of said substrate; forming a material layer above said substrate, the material layer annularly enclosing said nanowire; selectively removing a first part of said nanowire relative to said material layer, wherein a second part of said nanowire is not removed, a distal end of said second part of said nanowire distal from said substrate being closer to said substrate than a surface of said material layer so that said semiconductor structure has a recess at a location of said nanowire, the distal end of said nanowire being exposed at the bottom of said recess; and filling said recess with a second semiconductor material, the second semiconductor material being differently doped than said first semiconductor material.