查看文章

In this paper, we report biosynthesis of Zinc oxide nanoparticles (ZnONPs) from Vernonia Amygdalina (bitter leaf) extract. ZnONPs film was deposited on fluorine doped tin oxide (FTO) and characterized using UV visible spectroscopy, Fourier transform infra-red (FTIR) spectroscopy, scanning electron microscopy (SEM) and x-ray diffraction (XRD). Biosynthesized ZnONPs has~ 75% absorption at ultraviolet (UV) region. The FTIR spectroscopy shows that ZnONPs was synthesized as peaks at 1650 cm-1 and 725 cm-1 correspond to Zn-O stretching and deformation vibration, respectively which agreed with previous reports. The photovoltaic (PV) performance of the Vernonia Amygdalina-synthesized ZnONPs basedDye-sensitized solar cell (DSSC) was determined and compared with synthetic ZnONPs based DSSC. The synthesized ZnONPs based solar cell demonstrated enhanced power conversion efficiency of 0.63%. This shows that synthesized ZnONPs-based solar cell is found suitable for cost-effective and environmentally friendly energy conversion device.