Abstract
Bulk grown ρ-GaAs was implanted with 90 keV protons at a fluence of 1012./Vcm2. After fabricating Ti/Al Schottky barrier diodes, the implantation induced defects were characterized by deep level transient spectroscopy (DLTS). The activation energies of the detected hole defects ranged from 0.29 eV to 0.68 eV above the valence band. The electrical properties of three of these defects could be correlated with those of implantation induced defects detected previously by DLTS usingp-n junctions.