Patent ID: 9123826
Filing Date: 2015-09-01
Classification: H01L

Abstract:
1. A method of forming a semiconductor structure, the method comprising: forming a first fin and a second fin on a substrate; forming a gate structure over a first portion of the first fin and the second fin, the gate structure not covering a second portion of the first fin and the second fin; depositing single-crystal epitaxial layers surrounding the second portion of the first fin and the second fin, wherein the single-crystal epitaxial layer on the first fin does not contact the single-crystal epitaxial layer on the second fin; and depositing a polycrystalline layer surrounding the single-crystal epitaxial layers, so that the polycrystalline layer contacts the single-crystal epitaxial layer on the first fin and the single-crystal epitaxial layer on the second fin; wherein the single-crystal epitaxial layers and the polycrystalline layer comprise a merged source-drain region.