Study of the defects induced in N-type silicon irradiated by 1-3 MeV protons

Abstract
The electrical properties of semiconductor components can be greatly modified by proton implantation. Spreading resistance, C-V (capacitance voltage) and DLTS (deep levels transient spectroscopy) measurements have been used to characterize N-type silicon irradiated by MeV proton at fluences up to 10/sup 14/p/sup +/cm/sup -2/. The greatest drawback induced by proton implantation is the overdoping effect which can strongly reduce device efficiency. The present work reports this effect in both annealed and unannealed samples.