p-type dye-sensitized solar cells

Sodium hydroxide pretreatment as an effective approach to reduce the dye/holes recombination reaction in P-Type DSCs

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

Effect of alkyl chain length on the sensitizing action of substituted non symmetric squaraines for p-type dye-sensitized solar cells

The design and the synthesis of three unsymmetrical squaraines, DS_34, DS_45, and DS_47, have been achieved for their utilization as sensitizers of screen-printed NiO cathodes in p-type dye-sensitized solar cells (p-DSCs). DS_34, DS_45, and DS_47 are bidentate dyes, each bearing two carboxylic anchoring groups, which differ solely in the length of alkyl chain attached to the nitrogen atom of the condensed pyrrole ring (ethyl, butyl, and dodecyl for DS_45, DS_34, and DS_47, respectively).