Investigation on UV photodetector behavior of RF-sputtered ZnO by impedance spectroscopy |
| |
| Authors: | NH Al-Hardan MJ Abdullah H Ahmad A Abdul Aziz LY Low |
| |
| Affiliation: | a School of Physics, Universiti Sains Malaysia, 11800 Penang, Malaysia |
| |
| Abstract: | Ag/ZnO/Ag thin films representing metal/semiconductor/metal ultraviolet (UV) photodetectors were successfully prepared by RF magnetron sputtering. A UV light emitting diode was used as an illuminating source at 365 nm. The current-voltage characteristics of the device under UV illumination showed an enhancement in the forward current. Device modeling was carried out using impedance spectroscopy. The resistance of the device decreased as the light was switched from dark to UV. Moreover, the device showed further decrease in resistance at a bias voltage of up to 2 V. |
| |
| Keywords: | Impedance spectroscopy UV photodetector Zinc oxide |
| 本文献已被 ScienceDirect 等数据库收录！ |
