Patent ID: 8890118
Filing Date: 2014-11-18
Classification: H01L

Abstract:
1. A tunnel field effect transistor comprising: a source structure; a transition layer, formed of multiple layers, adjacent the source structure; an intrinsic channel layer adjacent the transition layer; and a drain structure adjacent the intrinsic channel; wherein a first layer of the multiple layers of the transition layer abuts the source structure forming a heterojunction; wherein a second layer of the multiple layers of the transition layer abuts the intrinsic channel layer forming a heterojunction; wherein the first layer of the multiple layers of the transition layer separates the second layer of the multiple layers of the transition layer from the source structure; wherein the second layer of the multiple layers of the transition layer separates the first layer of the multiple layers of the transition layer from the intrinsic channel layer; and a heterojunction between the first layer and the second layer of the multiple layers of the transition layer.