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CMOS technologies using metal/high-k damascene gate stacks with uniaxial strained silicon channels were developed. Gate electrodes of HfSix and TiN were applied to nFETs and pFETs, respectively. TiN/HfO2 damascene gate stacks and epitaxial SiGe source/drains were successfully integrated for the first time. As a result, drive currents of 1050 and 710 muA/mum at Vdd=l V, Ioff=100 nA/um and Tinv=1.6...
We have developed a dual metal gate CMOS technology with HfSix for nMOS and Ru for pMOS on HfO2 gate dielectric. These gate stacks show high mobility (100% of universal mobility for electron, 80% for hole at high fields) down to Tinv of 1.7 nm and symmetrical low Vt equivalent to poly-Si/SiO2. As a result, high drive currents of 780 muA/mum and 265 muA/mum at Ioff = 1 nA/mum are achieved for Vdd...
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