A low-temperature process for annealing extremely shallow As+-implanted n+/p junctions in silicon

Abstract
A new low‐temperature process that anneals out ion‐implantation damage and activates the dopant in extremely shallow, implanted n+/p structures is presented. This technique employs low‐energy (0.4 keV) H+ ion implantation following arsenic ion implantation and then a subsequent low‐temperature (500–600 °C) furnace anneal. Very little dopant redistribution takes place with this new process and the device characteristics are comparable to other processes employing short‐time, higher‐temperature anneals.