Fig. 6.

Comparison of (a) charge collection efficiency for planar and (b) SWAD as a function of drift time for (left column) holes, (middle column) electrons, and (right column) total signal for three different interaction depths (1) $20\mu \mathrm{m}$, (2) $100\mu \mathrm{m}$ (midpoint), and (3) $180\mu \mathrm{m}$ in a-Se bulk [adapted from Goldan et al. (Ref. 33)].