Patent ID: 9634084
Date: 2017-04-25
CPC Classifications: H01L

Claim:
1. A method for fabricating a fin-type transistor comprising: providing a gate structure extending at least partially over a fin extended above a substrate structure, the gate structure being disposed adjacent to at least one region of the fin; disposing a protective film conformally over the gate structure and over the at least one region of the fin; modifying the protective film over the at least one region of the fin to form a conformal buffer layer, wherein the modifying selectively alters a crystalline structure of the protective film over the at least one region which thereby becomes the conformal buffer layer, without altering the crystalline structure of the protective film disposed over the gate structure; and removing the un-altered protective film over the gate structure, leaving the conformal buffer layer over the at least one region to form at least one of a source region and a drain region of the fin-type transistor.