Patent ID: 7646066
Filing Date: 2010-01-12
Classification: H01L

Abstract:
1. A double gate field effect transistor structure comprising: a single crystal silicon substrate; a lower gate layer of single crystal rare earth electrically conductive silicide material positioned on the silicon substrate; a lower gate electrically insulating layer of single crystal rare earth electrically insulating material positioned on the lower gate layer of single crystal rare earth electrically conductive silicide material; an active layer of single crystal semiconductor material positioned on the lower gate layer of single crystal rare earth electrically insulating material; an upper gate insulating layer of single crystal rare earth electrically insulating material positioned on the active layer of single crystal semiconductor material; an upper gate layer of single crystal rare earth electrically conductive material positioned on the upper gate electrically insulating layer; the upper gate layer and the upper gate electrically insulating layer being formed to define an upper gate structure and a metal contact positioned on the upper gate layer; an impurity introduced into the lower gate layer of single crystal rare earth electrically conductive silicide material so as to define a lower gate area aligned with the upper gate structure; a source area and drain area in the active layer; and metal source and drain contacts positioned on the source area and drain area, respectively.