Dye-Sensitized Solar Cells (DSSCs)‎ Based on Extracted Natural Dyes

Abstract EN

Here, three natural dyes were extracted from different fruits and leaves and used as sensitizers for dye-sensitized solar cells (DSSCs).

Chlorophyll was extracted from spinach leaves using acetone as a solvent.

Anthocyanin was extracted from red cabbage and onion peels using water.

Different characterizations for the prepared natural dyes were conducted including UV-vis absorption, FTIR, and steady-state/time-resolved photoluminescence spectroscopy.

Various DSSCs based on the extracted dyes were fabricated.

The degradation in the power conversion efficiencies was monitored over a week.

The effect of the TiO2 mesoporous layers on the efficiency was also studied.

The interfaces between the natural dyes and the TiO2 layers were investigated using electrochemical impedance spectroscopy.