Ultra high temperature (UHT) anneals above 1200 C for less than 100
milliseconds for PMOS transistors reduce end of range dislocations, but
are incompatible with stress memorization technique (SMT) layers used to
enhance NMOS on-state current. This invention reverses the conventional
order of forming the NMOS first by forming PSD using carbon co-implants
and UHT annealing them before implanting the NSD and depositing the SMT
layer. End of range dislocation densities in the PSD space charge region
below 100 cm.sup.-2 are achieved. Tensile stress in the PMOS from the SMT
layer is significantly reduced. The PLDD may also be UHT annealed to
reduce end of range dislocations close to the PMOS channel.