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the redox potential of organic substances in aqueous solution.
Therefore, it is possible to use dyes that absorb light in the
visible range. The surface development
and the size of the
pores present in the layer are two parameters that must be
selected so that the guaranteed performance is maximized
light absorption and freely filling the pores
by the electrolyte
[4]. The purpose of titanium oxide in the dye-sensitized solar
cell is a transfer electron to the external circuit. The way of
transition of an electron in the DSSC is shown in Fig. 2.
Fig. 2. The transition of an electron in the dye-sensitized solar cell
The large surface development of the TiO
2
allows absorb
a greater amount of dye and
increased absorption of light, i.e.
improved efficiency. To increase the surface absorption of
photons, this layer is porous and nanocrystalline. Titanium
dioxide is a poor conductor of electricity but combined with
organic dye molecules increases its conductivity.
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