研究目的
To investigate the potential active involvement of DES media in the solar energy production process of DSSCs by means of directional and specific cooperative interactions between the photosensitizer and the so-called 'Natural Deep Eutectic Solvents' (NADESs).
研究成果
The study concludes that sugar-based NADESs can be used as eco-friendly solvents in DSSCs, with the best performance resulting from the interplay between a sugar-based sensitizer, a sugar-based co-adsorbent, and a sugar-based NADES. This represents a step towards more sustainable and efficient solar energy technologies.
研究不足
The study acknowledges the difficulty in directly evidencing the presence of intermolecular directional interactions. The performance enhancement is attributed to the collective interplay between the sugar-based sensitizer, the co-adsorbent, and the NADES, but the exact mechanism is not fully elucidated.
1：Experimental Design and Method Selection:
The study involved the preparation of sugar-based NADESs to be tested in combination with a sugar-based photosensitizer. The methodology included the synthesis of photosensitizers, preparation of NADESs, and assembly of DSSCs.
2：Sample Selection and Data Sources:
Five different monosaccharides were selected as H-bond donors in combination with choline chloride. The study used PTZ-Glu and PTZ-Th as photosensitizers and glucuronic acid as a co-adsorbent.
3：List of Experimental Equipment and Materials:
Common reagents were obtained from commercial suppliers. The photosensitizers were prepared according to literature. FTO-coated glass plates and TiO2 blend were purchased from commercial suppliers.
4：Experimental Procedures and Operational Workflow:
DSSCs were prepared by adapting a literature procedure. The process included cleaning FTO plates, screen-printing a TiO2 layer, thermal treatment, dye sensitization, and assembly of the solar cell.
5：Data Analysis Methods:
Photovoltaic measurements were carried out using a solar simulator. I-V curves were obtained using a digital source meter. IPCEs were recorded using a monochromator and a xenon lamp. EIS spectra were obtained using a galvanostat-potentiostat.
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