Patent ID: 8680589
Filing Date: 2014-03-25
Classification: B82Y,H01L

Abstract:
1. A nanowire field effect transistor (FET) device, comprising: a channel region including an elliptically shaped silicon portion disposed on a semiconductor substrate having a first distal end extending from the channel region and a second distal end extending from the channel region, the elliptically shaped silicon portion is partially surrounded by a gate structure disposed circumferentially on the elliptically shaped silicon portion; a source region including a first doped epi-silicon nanowire extension contacting the first distal end of the silicon portion, the first doped epi-silicon nanowire extension portion and the first distal end of the elliptically shaped silicon portion defining a first interface that is substantially normal to a plane defined by the semiconductor substrate, the first doped epi-silicon nanowire extension portion and the semiconductor substrate forming a third interface with is substantially coplanar with a fourth interface between the elliptically shaped silicon portion and the semiconductor substrate; and a drain region including a second doped epi-silicon nanowire extension contacting the second distal end of the elliptically shaped silicon portion, the second doped epi-silicon nanowire extension portion and the second distal end of the elliptically shaped silicon portion defining a second interface that is substantially normal to a plane defined by the semiconductor substrate, the second doped epi-silicon nanowire extension portion and the semiconductor substrate forming an fifth interface with is substantially coplanar with the fourth interface between the elliptically shaped silicon portion and the semiconductor substrate.