研究目的
Investigating the effects of mono- and bi-cyanoacrylic acid substituted phenothiazine based sensitizers on the performance of dye sensitized solar cells.
研究成果
The study demonstrated that mono-cyanoacrylic acid substituted phenothiazine sensitizer has better photovoltaic performance due to its higher light harvesting ability and binding nature with TiO2. The presence of 4-cyanophenyl group in the bi-substituted sensitizer hinders electron flow, resulting in lower efficiency.
研究不足
The efficiency of the fabricated DSSCs was lower compared to some literature reports, indicating potential areas for optimization in the design of sensitizers.
1：Experimental Design and Method Selection:
Synthesis of phenothiazine based sensitizers with mono- and bi-substituted cyanoacrylic acids.
2：Sample Selection and Data Sources:
Phenothiazine derivatives were synthesized and characterized.
3：List of Experimental Equipment and Materials:
Bruker Avance (400 MHz) NMR spectrometer, Thermo Exactive Orbitrap mass spectrometer, Agilent resolutions pro spectrum, Jasco V630 Spectrophotometer, Biologic SP-50 potentiostat, solar simulator (AM-
4：5 Filter, 150 W Xenon Lamp, 100 mW/cm2, Newport instrument). Experimental Procedures and Operational Workflow:
Synthesis, characterization, absorption and electrochemical studies, fabrication of DSSCs, and measurement of photovoltaic performance.
5：Data Analysis Methods:
UV-Visible spectroscopy, cyclic voltammetry, and DFT calculations for optimized geometries and energy levels.
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