Field effect transistor with conduction band electron channel and uni-terminal response

摘要

A uni-terminal transistor device is described. In one embodiment, an n-channel transistor comprises a first semiconductor layer having a discrete hole level H 0 ; a second semiconductor layer having a conduction band minimum E C2 ; a wide bandgap semiconductor barrier layer disposed between the first and the second semiconductor layers; a gate dielectric layer disposed above the first semiconductor layer; and a gate metal layer disposed above the gate dielectric layer and having an effective workfunction selected to position the discrete hole level H 0 below the conduction band minimum E c2 for zero bias applied to the gate metal layer and to obtain n-terminal characteristics.