
Dye-sensitized solar cells (DSSCs) have emerged as an innovative solar energy conversion technology that offers a new path for sustainable power generation. Typical DSSC consists of a sensitizing dye chemically bound to a nanocrystalline semiconductor oxide. In this study, two natural dyes were extracted from Malabar spinach and red spinach respectively, and used as photosensitizers to construct the DSSCs. The candle nip carbon coating technique was employed to prepare the counter electrodes, and a redox liquid iodine (I-/I3-) was used as an electrolyte. UV-vis spectroscopy was utilized to investigate the absorption range of the extracted dyes, while FT-IR was utilized to analyze the functional groups present. The photovoltaic properties of the cells, as well as their efficiency, were evaluated using current-voltage (I-V) curves. The extracted dyes showed significant optical absorption in ultraviolet and visible regions. The FT-IR spectra confirmed the presence of anchoring groups in the dye solutions. DSSC based on Malabar spinach dye has shown an open-circuit voltage (Voc) of 0.64 V, a short-circuit current (Isc) of 0.49 mA, a fill factor (FF) of 0.52, and a photoelectric conversion efficiency of 0.16%. In contrast, DSSC based on red spinach extract shows a photoelectric conversion efficiency of 0.14% with an open circuit voltage (Voc) of 0.61 V, a short circuit current (Isc) of 0.41 mA, and a fill factor (FF) of 0.43
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