(a) Assuming single-level R-G centers, Tn = Tp = T, and ET" = Ej , make a sketch of the net recombination rate (R) versus x for x-values lying within the electrostatic depletion region (0 ≤ X ≤ W). Include the specific values of R at x = 0, x = XF and x = Won your sketch.

(b) Is the net surface recombination rate (Rs) for the situation pictured in Fig. P5.7 expected to be less than, approximately equal to, or greater than the Rs at a totally depleted (ns→ 0, Ps→ 0) surface? Briefly explain how you arrived at your answer