Fig. 5

(a) Rise and decay curves of photocurrent under the periodic illumination (30 s) for ZnOD, ZnOD400, and ZnOD600 samples. (b) The current-voltage (I-V) curves of the prepared devices under dark and illumination.
(a) Rise and decay curves of photocurrent under the periodic illumination (30 s) for ZnOD, ZnOD400, and ZnOD600 samples. (b) The current-voltage (I-V) curves of the prepared devices under dark and illumination.