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Fundamental material interactions as pertinent to nano-scale copper interconnects were studied for CVD Co with a variety of micro-analytical techniques. Native Co oxide grew rapidly within a few hours (XPS). Incorporation of oxygen and carbon in the CVD Co films (by AES and SIMS) depended on underlying materials, such as Ta, TaN, or Ru. Copper film texture (by XRD) and agglomeration resistance (by...
A new integration scheme is presented to solve device and manufacturing issues for extremely thin SOI (ETSOI) technology with high-k/metal gate. Source/drain and extensions are effectively doped by an implant-free process to successfully reduce series resistance below 200 Omegaldrm. A zero-silicon-loss process is developed to eliminate loss of thin SOI layer during gate and spacer processes, enabling...
A scalable poly-Si/AlN/HfSiO gate stack, implementing a new aluminum nitride (AlN) cap layer, combined with oxygen diffusion barrier, halo and counter doping engineering, high temperature spike anneal for gate and junction activation, and optional inverted gate implant, has been successfully developed to fully offset the large threshold voltage (Vt) shifts in poly-Si/HfSiO devices and achieve good...
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