Tunnel field effect devices

摘要

An indirectly induced tunnel emitter for a tunneling field effect transistor (TFET) structure includes an outer sheath that at least partially surrounds an elongated core element, the elongated core element formed from a first semiconductor material; an insulator layer disposed between the outer sheath and the core element; the outer sheath disposed at a location corresponding to a source region of the TFET structure; and a source contact that shorts the outer sheath to the core element; wherein the outer sheath is configured to introduce a carrier concentration in the source region of the core element sufficient for tunneling into a channel region of the TFET structure during an on state.