The ZnO nanowires, grown from two Au electrodes, were networked to allow the mechanism of photoconduction. It was found that the photocurrents through the nanowires excited by both the below-gap and above-gap light are surface-related. The rise and decay times of the photoresponses show that the trapping time of electrons ranges from 10 ms to several hours. The results show that the I-V characteristics of the photocurrent under the illumination of the below-gap light are Schottky, while those under the illumination of the above-gap light are ohmic.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)