Dopant-free FUSI Pt/sub x/Si metal gate for high work function and reduced Fermi-level pinning

IEEE Electron Device Letters(2005)

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摘要
High work function (4.9 eV) on high-/spl kappa/ gate dielectric, which is suitable for bulk p-MOSFET, has been achieved using fully silicided (FUSI) Pt/sub x/Si gate without boron predoping of polysilicon. High concentration of Pt in FUSI Pt/sub x/Si using Ti capping layer on Pt in the FUSI process is a key to achieving high work function and reduced Fermi-level pinning on high-/spl kappa/ dielect...
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关键词
MOSFET circuits,Boron,Dielectric substrates,Annealing,Dielectric devices,Silicides,Doping,CMOSFETs,Leakage current,Nitrogen
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