Abstract
Background:
A photovoltaic cell, or solar cell, is an electronic component which, exposed
to light, produces electricity due to the photovoltaic effect. Organic photovoltaic cells are
photovoltaic cells, of which at least the active layer consists of organic molecules. It has a yield of
at least 15%. The future prospects of the research for solar cell application have been required for
development in the field.
Objectives:
In this work, we propose this paper to study the potential of purified betanin dye on the
DSSC applications.
Methods:
Extraction was elaborated under sonication conditions (25 kHz, 100 W) for 15 minutes.
Various films of TiO2 with different thicknesses were prepared referring to the doctor blade
method on an FTO glass substrate.
Results:
The increase of the thickness value of dye_TiO2 films induces a hyperchromic shift of the
emission intensity.
Conclusion:
In this work, betanin dye was extracted from mature red fruits of Opuntia ficus indica
and purified with fractional crystallization protocol using an 8:2 (v/v) ratio of ethyl acetate/ethanol.
TiO2_films with different thickness values have been prepared by CV and US sensitization of
TiO2_films using betanin dye proving an enhancement on the uniformity distribution of the dye on
the film in case of the US method. Emission spectra of Dye_TiO2 films have been measured and
show a hyperchromic shift of the emission intensity with the increase of the thickness due to the
augmentation of betanin content. A comparison between the photovoltaic properties of prepared betanin_
DSSC and N719 dye_DSSC reveals that betanin dye could be successfully proposed as a sensitizing
dye in solar cell applications.