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Institute of Nano Optoelectronics Research and Technology (INOR), University Sains Malaysia , Penang , Malaysia
Department of Physics, Sule Lamido, ahun-Kano Road, University Kafin-Hausa , Jigawa State , Nigeria
Institute of Nano Optoelectronics Research and Technology (INOR), University Sains Malaysia , Penang , Malaysia
Institute of Nano Optoelectronics Research and Technology (INOR), University Sains Malaysia , Penang , Malaysia
Department of Physics, Sule Lamido, ahun-Kano Road, University Kafin-Hausa , Jigawa State , Nigeria
This study aims to dope silver (Ag) and fluorine (F) in zinc oxide (ZnO) for the improvement of photoresponse properties in ZnO since previous reports confirmed improvement of these properties using individual doping of F and Ag. The F-doped ZnO (FZO) and F and Ag co-doped ZnO (FAZO) nanorods were synthesized using a modified hydrothermal method and characterized with the Field emission scanning electron microscopy, X-ray photoelectron spectroscopy, photoluminescence analysis and Ultraviolet (UV)-Visible analysis. Two photodetectors (PD)` based on FZO and FAZO were fabricated. The FAZO PD outperformed the FZO PD in terms of photoresponse characteristics at even lower bias voltages, when irradiated at the UVlight of 365 nm, which might be related to better crystal quality in the FAZO PD. The sensitivity, responsivity, quantum efficiency, detectivity, rise and fall times at zero bias for the FAZO PD are 24463%, 8.24 mA/W, 6.47x108 Jones, 2.8%, 70 ms, and 80 ms, respectively, and 9418%, 0.2 mA/W, 6.25x107 Jones, 0.1%, 80 ms, and 80 ms for the FZO PD. Hence, F and Ag co-doping in ZnO have shown promising results for enhancing PD parameters characteristics.
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