Fabrication of ultra-violet photodetector with enhanced optoelectronic parameters using low-cost F-doped ZnO nanostructures

Muhammad, A.; Hassan, Z.; Mohammad, Sabah M.; Rajamanickam, Suvindraj; Shitu, Ibrahim Garba

doi:10.1016/j.sna.2021.113092

Cited by 26 publications

(7 citation statements)

References 52 publications

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“…FESEM analyzes the surface morphology, particle distribution, and shape, [ 33 ] and hence the prepared fibers were visualized by FESEM and the resulting images are shown in Figure . From Figure 2a, it can be seen that PAN fibers have a smooth surface and a regular cylindrical shape.…”

Section: Resultsmentioning

confidence: 99%

Interfacial Bionic Design and Performance Evaluation of Polyacrylonitrile Fiber@SBS Modified Binder

Xing

Liu

Muhammad

et al. 2022

Macro Materials & Eng

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The mechanical properties of fiber composites are greatly affected by the interfacial interactions between the fibers and matrix, and hence the study of interfacial properties becomes critical. This study demonstrates a simple and effective interfacial modification process using polydopamine (PDA) coating with ZnO nanorods to construct a multi‐scale bionic structure on the polyacrylonitrile (PAN) fiber, which is conducive to increasing the bonding area and enhancing the load transfer, thus boosting the mechanical properties of the modified fiber‐incorporated asphalt binder. The cone penetration test and thermogravimetric analysis show that the octopus‐inspired multiscale PAN fiber (OIM‐PAN) composite styrene butadiene styrene modified binder (SBS/MB) has better shear strength and thermal stability. Dynamic shear rheometer test shows that the deformation resistance and viscoelastic properties of the fiber composite SBS/MB are enhanced compared with SBS/MB, and the OIM‐PAN composite SBS/MB (OIM‐PAN@SBS/MB) exhibits the best deformation resistance and viscoelastic properties. Thus, it can be concluded that this interfacial modification process can significantly improve the mechanical properties of fiber–asphalt composites by introducing a third phase between the fiber and asphalt interface to achieve functionally graded material properties and enhance the load transfer between the interfaces for large‐scale applications in road engineering and construction sites.

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Section: Resultsmentioning

confidence: 99%

Interfacial Bionic Design and Performance Evaluation of Polyacrylonitrile Fiber@SBS Modified Binder

Xing

Liu

Muhammad

et al. 2022

Macro Materials & Eng

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“…The observed photocurrent of FZO and FAZO devices rises from 11 to 17 μA, respectively (Figure 8), which is higher than the reported in previous studies (Ajmal et al , 2020). The PD quality was demonstrated through sensitivity which is estimated using equation (3) (Muhammad et al , 2021). The estimated values of FZO and FAZO PDs were 8284 and 8520%, respectively: …”

Section: Resultsmentioning

confidence: 99%

“…Each of these methods necessitates specific growth conditions and specialized equipment. However, the hydrothermal process which is used for the synthesis of nanostructured materials is uncomplicated, unique, healthy, scalable, low-cost, lower temperature and needs just simple equipment (Ajmal et al , 2020; Muhammad et al , 2021). Also, the oxygen adsorption/desorption capacity is improved by the hydrothermal approach (Agrawal et al , 2018).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, fluorine (F) is an excellent dopant choice in ZnO, which can easily replace O with the least lattice perturbation because of their almost identical atomic radii [F − (1.36 Å), O 2− (1.40 Å)]. Also, it enhanced conductivity by lowering material resistance and carrier ion mobility, as well as lowering recombination centers (prevention of electron trapping) through the passivation process (Choi et al , 2015; Muhammad et al , 2021; Wang et al , 2018). Therefore, Ag and F were chosen for this study because of their interesting and amazing features reported from works of literature.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of fluorine and silver co-doped ZnO photodetector using modified hydrothermal method

Muhammad

Mohammad

Hassan

et al. 2022

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Purpose The purpose of this study is to dope silver (Ag) and fluorine (F) in zinc oxide (ZnO) for the enhancement of electrical and optical properties of ZnO, as previous studies reported the improvement of these properties using individual doping of F and Ag. In this paper, F and Ag co-doped ZnO nanorods were synthesized using a modified hydrothermal method. Design/methodology/approach The hydrothermal method was modified and used for the synthesis of the doped ZnO nanostructures, where stainless autoclave and oven were replaced with the Duran laboratory bottle and water boiler system in the process. The ultraviolet metal-semiconductor-metal photodetector (PD) was fabricated using DC sputtering method. Findings Vertically aligned nanorods images were captured from field emission scanning electron microscopy. XPS analysis confirmed greater spin-orbital interaction in the F and Ag co-doped ZnO sample and revealed the presence of F, Ag, Zn and O in the samples, indicating a successful doping process. X-ray diffraction revealed a hexagonal wurtzite structure with enhanced crystal quality upon co-doping. The bandgap decreased from 3.19 to 3.14 eV upon co-doping because of reduced defects density in the sample. Finally, an ultra-violet PD was fabricated with enhanced sensitivity and response times upon co-doping. Originality/value The low-cost, less energy-consuming Duran laboratory bottle and water boiler system were used as the substitute of expensive, more energy-consuming stainless autoclave and oven in a hydrothermal method for synthesis of F and Ag co-doped ZnO and subsequent fabrication of PD.

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“…The repeatability of the photodetector was studied via illuminated with UV light with a wavelength of 365 nm and were alternately switched on and off, as shown in Figure 10. The detection speed of the photodetector is defined by these two essential key factors, which are rise time ( τ r ) and fall-down time ( τ f ) and are described as the time spans for the photocurrent to rise from 10% to 90% and decrease from 90% to 10% of its maximum value of a photodetector, respectively (Muhammad et al , 2021; Ajmal et al , 2020).…”

Section: Ultraviolet Detection Measurementsmentioning

confidence: 99%

Fabrication of UV ZnO NRS photodetector based on seeded silicon substrate via the drop-casting technique

Abed

Mohammad

Hassan

et al. 2022

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Purpose The purpose of this study is to fabricate an ultraviolet (UV) metal-semiconductor-metal (MSM) photodetector based on zinc oxide nanorods (ZnO NRs) grown on seeded silicon (Si) substrate that was prepared by a low-cost method (drop-casting technique). Design/methodology/approach The drop-casting method was used for the seed layer deposition, the hydrothermal method was used for the growth of ZnO NRs and subsequent fabrication of UV MSM photodetector was done using the direct current sputtering technique. The performance of the fabricated MSM devices was investigated by current–voltage (I–V) measurements. The photodetection mechanism of the fabricated device was discussed. Findings Semi-vertically high-density ZnO (NRs) were effectively produced with a preferential orientation along the (002) direction, and increased crystallinity is confirmed by X-ray diffraction analysis. Photoluminescence results show a high UV region. The fabricated MSM UV photodetector showed that the ZnO (NRs) MSM device has great stability over time, high photocurrent, good sensitivity and high responsivity under 365 nm wavelength illumination and 0 V, 1 V, 2 V and 3 V applied bias. The responsivity and sensitivity for the fabricated ZnO NRs UV photodetector are 0.015 A W-1, 0.383 A W-1, 1.290 A W-1 and 1.982 A W-1 and 15,030, 42.639, 100.173 and 334.029, respectively, under UV light (365 nm) illumination at (0 V, 1 V, 2 V and 3 V). Originality/value This paper uses the drop-casting technique and the hydrothermal method as simple and low-cost methods to fabricate and improve the ZnO NRs photodetector.

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Fabrication of ultra-violet photodetector with enhanced optoelectronic parameters using low-cost F-doped ZnO nanostructures

Cited by 26 publications

References 52 publications

Interfacial Bionic Design and Performance Evaluation of Polyacrylonitrile Fiber@SBS Modified Binder

Interfacial Bionic Design and Performance Evaluation of Polyacrylonitrile Fiber@SBS Modified Binder

Fabrication of fluorine and silver co-doped ZnO photodetector using modified hydrothermal method

Fabrication of UV ZnO NRS photodetector based on seeded silicon substrate via the drop-casting technique

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