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The Ni-silicide phase formation in FUSI gates was investigated comparing soak and spike anneals for the first RTP step. From both physical analysis on blanket wafers and electrical measurements on nMOS FUSI/HfSiON device it is found that the RTP1 temperature process window (PW) to obtain NiSi or Ni3Si2 at the FUSI/dielectric interface is significantly widened for spike anneals (30degC < PW <...
We have extensively studied stress enhancing techniques to increase channel mobility starting at the 130 nm technology node and continued this towards the 45 nm node. Stressed overlayers and spacer materials, strained SOI substrates, embedded SiGe and SiC layers and their proximity effects, the impact of different silicides, stress memorization and compatibility with laser and flash anneals have been...
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