研究目的
Improving the dye-sensitized solar cell's performance through a novel composite electrode of TiO2 particles with three kinds of crystal phases.
研究成果
The composite electrode containing 30 wt% brookite nanocubes and 70 wt% P25 significantly improves the photovoltaic performance of DSSCs, achieving a conversion efficiency of 7.40%. This enhancement is attributed to the synergistic effects of reduced charge recombination, higher voltage from brookite, and high surface area for dye loading from P25.
研究不足
The study focuses on the performance improvement of DSSCs using composite TiO2 electrodes but does not explore the long-term stability or scalability of the fabrication process.
1：Experimental Design and Method Selection:
The study involves the synthesis of brookite TiO2 quasi nanocubes via a hydrothermal method and the fabrication of composite electrodes with P25 for DSSCs.
2：Sample Selection and Data Sources:
Brookite TiO2 nanocubes and P25 particles are used as the primary materials.
3：List of Experimental Equipment and Materials:
Includes TiCl4, urea, sodium lactate liquor, ethanol, acetic acid, terpinol, ethyl cellulose, FTO glass, N719 dye, and a Pt-coated FTO counter electrode.
4：Experimental Procedures and Operational Workflow:
The synthesis of brookite TiO2, preparation of TiO2 paste, fabrication of photoanodes, dye sensitization, and assembly of solar cells are detailed.
5：Data Analysis Methods:
Characterization techniques include XRD, FESEM, TEM, UV–vis DRS, and electrochemical impedance spectroscopy (EIS).
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