Abstract
Zinc Oxide nanoparticles (ZnO) have been successfully synthesized by a chemical method at a low temperature of 60°C and dried at 80°C. The matching of the observed 2 q value with the JCPDS value of the XRD pattern showed that ZnO was synthesized. The pattern obtained showed high peaks as an indication of crystallinity at low temperature without annealing. The average grain size of the crystal obtained using Debye scherrer formular is 18.6 nm. The crystal structure lattice system is hexagonal wurzite structure. The SEM images obtained showed that the material is made up of agglomerated grains resulting in nanostructured islands. The direct optical band gap was obtained using Tauc’s relationship to be 2.4 eV. A bioenzymevoltaic cell was developed in form of a Dye Sensitized Solar Cell but with a photosynthetic material: Chromolaena Odorata acting as both the dye and the electrolyte. The short circuit current of 1.5 mA and open circuit voltage of 170 mV were obtained for the continuous and residual energy on the system. We found that the device exhibited a bio-capacitive effect, as the photosynthetic material generates electron and the energy is being stored in the system as much as 39 mA with a corresponding voltage of 196 mV.
Highlights
Renewable source of energy has attracted much attention from researchers throughout the world because of rapid diminishing in fossil fuel
We report the development of a photosynthetic Chromolaena Odorata - Nanostructured Zinc Oxide system similar to that of a dye sensitized solar cell
3.1.1 X-ray Diffractometer (XRD) Analysis The structural properties of the Zinc Oxide prepared at low temperature 600C was characterized with X-ray diffractometer with 2θ values range between 20-80o
Summary
Renewable source of energy has attracted much attention from researchers throughout the world because of rapid diminishing in fossil fuel. There is climate change due to alteration in natural carbon cycle and increase in carbon dioxide in the atmosphere due to human activities that emits carbon dioxide through combustion of fossil fuels (coal, natural gas and oil) for energy, transportation and industrial use. This heat trapping gases leads to global warming. Dye Sensitized Solar Cell (DSSC) is one of the attractive and cheap devices for the conversion of solar light into electrical energy since Gratzel and O’Regan firstly reported the prototype of this solar cell in 1991.2
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
