研究目的
Investigating the effect of Thiazole as a heterocycle with donation group in DSSCs, the effects of a double Azo group, and increasing the length of π-conjugation by reducing band gap through heterocycle rings and Nitro anchoring group for solar cell application.
研究成果
The synthesized dyes with NO2-based anchoring group were effectively loaded on the TiO2 surface and showed good interaction with TiO2. The introduction of heterocycles in the structure improved absorption and efficiency for solar applications. The HOMO level of dyes was suitable for electron transfer to TiO2, crucial in DSSCs performance. The D sample showed the highest efficiency due to increased heterocycles and effective electron transfer.
研究不足
The study focuses on the synthesis and characterization of novel para-azo dyes for solar cell applications, but the practical efficiency and scalability of these dyes in commercial solar cells are not addressed.
1：Experimental Design and Method Selection:
Four dye samples were synthesized to study the effect of double periodic azo group, heterocycle ring, and nitro anchoring group in the structure.
2：Sample Selection and Data Sources:
Dye samples were synthesized using 4-nitroaniline, DMF, deionized water, HCl, NaNO2, sodium acetate, and coupling agents.
3：List of Experimental Equipment and Materials:
Shimadzu IR affinity-1, FT-IR spectrometer, Brucker spectrometer for NMR, UV-1800 Shimadzu UV spectrophotometer, Diffuse Reflectance Spectroscopy Sinco S4100, IVIUM Compactstate for EIS.
4：Experimental Procedures and Operational Workflow:
Synthesis of dyes, preparation of solar cell samples using the doctor blade method, characterization using IR, ATR, UV-Vis, DRS, CV, HNMR, IV analysis, and EIS.
5：Data Analysis Methods:
Analysis of functional groups, absorption spectra, electrochemical properties, and photovoltaic performance.
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