ZnO nanostructures assisted growth using different NH₄F concentrations for photovoltaic applications
by A. Muhammad; Z. Hassan; Sabah M. Mohammad; Suvindraj Rajamanickam
International Journal of Nanotechnology (IJNT), Vol. 19, No. 2/3/4/5, 2022

Abstract: In this study, different morphologies of ZnO nanostructures (NSs) were synthesised by adding ammonium fluoride (NH₄F) at different concentrations using the hydrothermal method for the exploration of photovoltaic applications. Morphology varies from well-aligned hexagonal nanorods (NRs) to nanoflakes (NFLs) and nanoflowers (NFs) are observed and revealed by field emission scanning microscopy (FESEM). X-ray diffraction spectrum (XRD) analysis confirmed good crystal quality of ZnO nanostructures (NSs) along (002). Ultraviolet-visible (UV-Vis) analysis confirmed strong reflection suppression in the ultraviolet-near infrared (UV-NIR) range, giving a high green signal for solar cell applications. Finally, photoluminescence (PL) emission has shown both strong near band edge (NBE) and deep level emission (DLE) peaks indicating a promising signal for different applications such as for photosensors and photocatalytic activity. Lastly, a fast and sensitive photodetector (PD) based on 0F and 3F samples was fabricated with promising performance.

Online publication date: Wed, 27-Jul-2022

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