Nitrogen Implanted α-SiC : A Correlation Between Electrical (C-V) Measurements and Damage Studies Using the Channeling Technique.

Abstract

<p>The annealing behaviour of 15N implanted, aluminum doped-SiC has been studied by measuring the differential capacitance as a function of applied bias. The samples were doubly implanted at 450°c with 45 Kev and 25 Kev ions, for a dose of 10^16/cm^2 at each energy.</p> <p> An n-i-p structure with a thick insulator region was found after annealing at 1000°c. The thickness of this i region could be substantially reduced with additional annealing at higher temperatures, and a fairly good n-p junction was obtained after 1480°c anneal.</p> <p> About 20-30% of the implanted nitrogen ions were found to be electrically active.</p> <p> The C-V behaviour was found to have large variations with the a.c. measuring frequency.</p>