Figure 11

R v/s power density profile of (a) as-deposited and (b) acid-treated samples at + 5 V bias under 400 nm UV illumination. Variation of D* and NEP profile w.r.t voltage of (c) as-deposited and (d) acid-treated samples.

R v/s power density profile of (a) as-deposited and (b) acid-treated samples at + 5 V bias under 400 nm UV illumination. Variation of D* and NEP profile w.r.t voltage of (c) as-deposited and (d) acid-treated samples.