研究目的
Investigating the performance of dye-sensitized solar cells (DSSCs) using extracts from Murraya koenigii, Plectranthus amboinicus, and Coriandrum sativum as photosensitizers.
研究成果
The chlorophyll dyes from the tested plant sources were capable of binding themselves to the titanium dioxide semiconductor, with the dye from Plectranthus amboinicus showing the best conversion efficiency. This research demonstrates the potential of natural dyes as eco-friendly and renewable energy sources for DSSC applications.
研究不足
The photovoltaic performance recorded is low, indicating the need for efficiency improvement strategies such as novel fabrication technologies, new electrolytes, modification of natural sensitizers, and novel counter electrodes.
1：Experimental Design and Method Selection:
The study involved the extraction of natural dyes from three plant sources and their application in DSSCs. The performance of these DSSCs was evaluated based on photovoltaic parameters.
2：Sample Selection and Data Sources:
Leaves of Murraya koenigii, Plectranthus amboinicus, and Coriandrum sativum were used for dye extraction.
3：List of Experimental Equipment and Materials:
Titanium dioxide (TiO2, Degussa P25), Surfactant Triton X100, iodide/tri-iodide electrolyte, fluorine-doped tin oxide glass (FTO-2 cm × 2 cm), and ethanol were used.
4：Experimental Procedures and Operational Workflow:
The dyes were extracted using ethanol, and DSSCs were fabricated with TiO2 as the working electrode, a platinum counter electrode, and the extracted dyes as photosensitizers.
5：Data Analysis Methods:
The photovoltaic performance was measured using a solar simulator under 85 mW/cm2 condition, and UV-Vis and FTIR spectra were recorded for the dyes.
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