Sodium hydroxide pretreatment as an effective approach to reduce the dye/holes recombination reaction in P-Type DSCs
01 Pubblicazione su rivista
BONOMO MATTEO, Barbero Nadia, NAPONIELLO GAIA CLARA MERCEDES, Giordano Marco, DINI DANILO, Barolo Claudia
ISSN: 2296-2646
We report the synthesis of a novel squaraine dye (VG21-C12) and investigate its behavior
as p-type sensitizer for p-type Dye-Sensitized Solar Cells. The results are compared
with O4-C12, a well-known sensitizer for p-DSC, and sodium hydroxide pretreatment
is described as an effective approach to reduce the dye/holes recombination. Various
variable investigation such as dipping time, dye loading, photocurrent, and resulting cell
efficiency are also reported. Electrochemical impedance spectroscopy (EIS) was utilized
for investigating charge transport properties of the different photoelectrodes and the
recombination phenomena that occur at the (un)modified electrode/electrolyte interface.