Lp. Biro et al., INFLUENCE OF SAMPLE THICKNESS ON CARRIER LIFETIME MODIFICATION INDUCED BY 4 MEV PROTON IMPLANTATION IN SILICON, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 112(1-4), 1996, pp. 173-176
Low dose irradiation with 4 MeV protons was used for lifetime modifica
tion in Si. The depth dependence of the induced effect was investigate
d by Microwave Photoconductive Decay (mu-PCD) technique. By adopting a
special sample structure it was possible to distinguish effects on li
fetime caused by implantation defects and by carrier diffusion in the
undamaged Si underneath. Limits are given when mu-PCD is applied to me
asure lifetime changes set by deep implants.