研究目的
Investigating the use of natural dyes extracted from Piper Betel, Adonidia Merrillii, and Morinda Citrifolia as photosensitizers in dye-sensitized solar cells (DSSCs) to explore their potential for solar energy conversion.
研究成果
The study demonstrated that natural dyes extracted from Piper Betel, Adonidia Merrillii, and Morinda Citrifolia can be used as sensitizers in DSSCs, with Piper Betel showing the highest conversion efficiency. Although the efficiencies are low for practical applications, the results serve as a reference for future studies on these natural sensitizers.
研究不足
The efficiencies obtained from the natural dye sensitizers were quite low for large-scale practical applications. The presence of oily substance in the Adonidia Merrillii dye contributed to its low performance.
1：Experimental Design and Method Selection:
The study involved the extraction of natural dyes from Piper Betel leaves, Adonidia Merrillii fruits, and Morinda Citrifolia roots using cold extraction and Soxhlet extraction techniques. The dyes were then used to fabricate DSSCs.
2：Sample Selection and Data Sources:
The plant materials were collected from around Perlis, Malaysia.
3：List of Experimental Equipment and Materials:
TiO2 paste (Ti-nanoxide, Solaronix), fluorine-doped tin oxide (FTO) conductive glasses, platinum paste (Platisol, Solaronix), ethanol, acetonitrile, potassium iodide, and iodine.
4：Experimental Procedures and Operational Workflow:
The photo electrodes were prepared by depositing TiO2 paste onto FTO glasses using the doctor blade technique, followed by sintering. The electrodes were then dipped in the dye solutions. Counter electrodes were prepared similarly with platinum paste. The DSSCs were assembled by sandwiching the dyed TiO2 electrode and the platinum counter electrode with an electrolyte solution.
5：Data Analysis Methods:
The performance of the DSSCs was analyzed using pH meter, FT-IR spectroscopy, and UV-Vis spectroscopy.
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