%T Effect of Bandgap Vs Electron Tunneling
on Photovoltaic Performance of
Ringwood (Syzgium Anisatum) Dyesensitized
Solar Cell
%L eprints15358
%A T.J Abodunrin
%A O. O. Ajayi
%A Moses Emetere
%A A. P. I. Popoola
%A U. O. Uyor
%A O. Popoola
%A O. Popool
%X The quest for more energy remains vital to energy sustainability. In the wake of several adverse consequences
of indiscriminate combustion of fossil fuel, there is an urgency to exploit our natural environment for
ecologically benign alternatives. This search led to S. anisatum dye being investigated for its prospective
application in dye-sensitized solar cells. Phytochemical screening revealed the presence of phenols, flavonoids,
tannins, glycosides, terpenoids and protein, presenting a wide repertoire of chromophore selection for charge
transport. UV/VIS spectroscopy showed that S.anisatum dye exhibits multiple peak absorbances of radiation
within the near ultraviolet and the visible region of the electromagnetic spectrum of light. The consequent
adsorption of its chromophores into titanium structure, amplitude of interatomic vibrations of the novel
structures formed in S. anisatum dye were subject of our investigation. The outcome shows
TiO2/S.anisatum dye interface reveals the impact of orientation on output photovoltaic performance
of S.anisatum dye-sensitized solar cells with a short circuit current of 0.07 mA, open circuit voltage of 68.8
mV, fill factor value of 0.84 and the output efficiency was 0.027 % using KBr electrolyte. This is a
comparatively good result considering previous records of dye-sensitized solar cell photovoltaic performance.
The significance of these results was re-analyzed from molecular perspective with the aid of scanning electron
microscopy (SEM). A need to boost the efficiency necessitated the interpretation of SEM micrographs using
Gwwydion software program. These presented possible areas for charge transport within the electron shells
of S.anisatum dye nanocomposite, and regions where tunneling occurred providing a much needed insight for
future studies. Consequently, this study was expanded to accommodate the influence of bandgap on electron
occupancy in S.anisatum shells. This elucidation captures the molecular dynamics of charge transport versus
tunneling, consequent upon output performance of dyesensitized solar cell technology explained with quantum
principles. The application of this work is particularly relevant in modelling, photovoltaic simulations and
building energy efficient models.
%J Close Drawer Menu IAENG Transactions on Engineering Sciences
%K Bandgap
 Energy Efficiency
 Energy Harvesting
 Electron Tunneling
%R https://doi.org/10.1142/9789811215094_0012