High UV-light sensitivity, fast response, and low power consumption are the most important features of nanowire-based devices for new applications in photodetectors, optical switches, and image sensors. Single AlN nanowire deep ultraviolet (UV) photodetector has been fabricated utilizing very high-quality AlN nanowires through a very practical dielectrophoretic assembly scheme. The low-voltage (≤ 3 V) operating UV photodetector has selectively shown a high photocurrent response to the 254 nm UV light. Furthermore, the photocurrent transients have been modelled to determine the rise and decay time constants as 7.7 s and 11.5 s, respectively. In consequence, combination of deep UV light selectivity and low voltage operation make AlN nanowires great candidates for the development of compact deep UV photodetectors.
Internal Gain of InGaN/GaN Metal-Insulator-Semiconductor Photodetector
