Figure 12
On–Off response under UV illumination at a bias of + 5 V for (a) as-deposited (b) acid-treated samples. (c) shows rise time and (d) fall time for as-deposited sample. And (e) rise time and (f) fall time for acid-treated sample. (both samples biased at + 5 V (400 nm UV LED, power density of 0.79 mW/cm2).
