Low-Threshold-Voltage MoN/HfAlO/SiON p-MOSFETs With 0.85-nm EOT

By using HfAlO as a capping layer on SiON, MoN/HfAlO/SiON p-MOSFETs show an effective work function of 5.1 eV, a low threshold voltage of -0.1 V, and a peak hole mobility of 80 cm(2)/(V . s) at small equivalent oxide thickness of 0.85 nm. These self-aligned and gate-first p-MOSFETs processes, with standard ion implantation and 1000 degrees C rapid thermal annealing, are fully compatible with current very large scale integration fabrication lines.