Simulation of AsH3 plasma immersion ion implantation into silicon

Plasma immersion ion implantation from AsH3 plasma into (100) crystalline silicon was performed using the PULSION tool of Ion Beam Services. Ultra-shallow arsenic doping profiles with maximum concentrations in excess of 1×1022 cm-3 and penetration depths below 10 nm at a concentration of 1×1018 cm-3 were obtained. Two simulation models were applied to describe the observed arsenic profiles: the one developed by the authors earlier for BF3 plasma and a new one that accounts for the specifics of AsH3 plasma.