研究目的
Investigating the use of non-toxic food dyes in dye-sensitized solar cells (DSSCs) to improve power conversion efficiency (PCE) and reduce toxicity and cost.
研究成果
Combining non-toxic food dyes in DSSCs significantly improves PCE, with the highest efficiency of 2.64% achieved using Amaranth and Erythrosin B. This approach offers a promising direction for developing cost-effective and environmentally friendly solar cells.
研究不足
The study is limited by the relatively low PCE achieved compared to traditional dyes and the need for further optimization of dye combinations and photoelectrode materials.
1：Experimental Design and Method Selection
The study explored the use of non-toxic food dyes (Amaranth, Sunset Yellow, and Erythrosin B) in DSSCs, combining two dyes for the first time to enhance PCE. DFT calculations were used to evaluate the dyes' energy levels.
2：Sample Selection and Data Sources
Food dyes were purchased from Sigma, Inc. DSSCs were fabricated using TiO2 and ZnO as photoelectrodes.
3：List of Experimental Equipment and Materials
Electrochemical workstation (CH Instruments Electrochemical Analyzer, 760E), solar simulator (Newport), FESEM (Hitachi S-4700), UV-Visible spectrophotometer (UV 2450 Shimadzu).
4：Experimental Procedures and Operational Workflow
Photoelectrodes were prepared using the doctor-blade method, sensitized with dye solutions, and characterized for photovoltaic performance, EIS, and IPCE.
5：Data Analysis Methods
DFT calculations for dye molecules' energy levels, UV-Vis spectra for light absorption analysis, and EIS for charge transfer resistance evaluation.
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