We have examined the impact of small and systematic changes at the metal/dielectric interface on metal work-function and report on Fermi level pinning of TaN, TaSiN and TiN gates on SiO2, Al2O3 and HfO2 for the first time. The shifts in work-function agree in most cases with the MIGS theory if accurate theoretical parameters are used.
Published in:
Electron Devices Meeting, 2003. IEDM '03 Technical Digest. IEEE International
Date of Conference: 8-10 Dec. 2003