Abstract
In this paper, 100 nm-thick zinc oxide (ZnO) films were deposited as a seed layer on Corning glass substrates via a radio frequency (RF) magnetron sputtering technique, and vertical well-aligned Fe-doped ZnO (FZO) nanorod (NR) arrays were then grown on the seed layer-coated substrates via a low-temperature solution method. FZO NR arrays were annealed at 600 °C and characterized by using field emission scanning microscopy (FE-SEM) and X-ray diffraction spectrum (XRD) analysis. FZO NRs grew along the preferred (002) orientation with good crystal quality and hexagonal wurtzite structure. The main ultraviolet (UV) peak of 378 nm exhibited a red-shifted phenomenon with Fe-doping by photoluminescence (PL) emission. Furthermore, FZO photodetectors (PDs) based on metal–semiconductor–metal (MSM) structure were successfully manufactured through a photolithography procedure for UV detection. Results revealed that compared with pure ZnO NRs, FZO NRs exhibited a remarkable photosensitivity for UV PD applications and a fast rise/decay time. The sensitivities of prepared pure ZnO and FZO PDs were 43.1, and 471.1 for a 3 V applied bias and 380 nm UV illumination, respectively.
Highlights
People’s lives have become more comfortable and convenient with the rapid development of the economy, military and industrial technology in the past decade
We report on the structure morphology, crystal lattice, and optical properties of synthesized Fe-doped zinc oxide (ZnO) (FZO) nanorod (NR) arrays
The UV-to-visible rejection ratios for pure ZnO and FZO MSM PDs were 96.03 and 1273.61, respectively. These results show that the responsivities for the prepared pure ZnO and FZO PDs were 0.298 and 0.758 A/W, respectively
Summary
People’s lives have become more comfortable and convenient with the rapid development of the economy, military and industrial technology in the past decade This development has caused several adverse effects, such as greenhouse effect, air pollution and acid rain, which have damaged the ecological balance of Nature. Among the different growth methods, CBD is an uncomplicated growth method under low temperature conditions and an inexpensive method It was employed in the preparation of ZnO nanostructures in our experiments owing to these outstanding advantages. We report on the structure morphology, crystal lattice, and optical properties of synthesized Fe-doped ZnO (FZO) nanorod (NR) arrays These FZO NR arrays are prepared through a simple CBD method with a photolithography procedure. FZO PD samples were investigated by several instrumental techniques
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