Patent ID: 6674099
Filing Date: 2004-01-06
Classification: H01L

Abstract:
A metal insulator semiconductor field effect transistor (MISFET) comprising:a source layer being made with a material having a source band-gap (EG2) and a source mid-gap value (EGM2), said source layer having a source Fermi-Level (EF2); a drain layer having a drain Fermi-Level (EF4); a channel layer between the source layer and the drain layer, said channel layer being made with a material having a channel band-gap (EG3) and a channel mid-gap value (EGM3), said channel layer having a channel Fermi-Level (EF3); a source contact layer connected to the source layer opposite the channel layer, said source contact layer having a source contact Fermi-Level (EF1); and a gate electrode having a gate electrode Fermi-Level (EF6) wherein: said source band-gap (EG2) is substantially narrower than said channel band gap (EG3); said source contact Fermi-Level (EF1), said source Fermi-Level (EF2), said channel Fermi-Level (EF3), said drain Fermi-Level (EF4) and said gate electrode Fermi-Level (EF6) are equal to said source mid-gap value (EGM2) and said channel mid-gap value (EGM3), within a predetermined tolerance value, when no voltage is applied to the device.