研究目的
To study the performance of phthaloychitosan gel polymer electrolyte (GPE) based sensitized solar cells (SSCs) fabricated with different types of sensitizer.
研究成果
Among the five sensitizers studied, curcumin dye extracted from turmeric plant resulted in the best performance in SSCs, attributed to the presence of OH group in its molecular structure that facilitates attachment to the TiO2 layer. EIS measurement confirmed good interfacial properties at the photoanode/electrolyte interface.
研究不足
The study focused on a limited number of sensitizers and used a specific type of GPE. The performance of SSCs could be influenced by the choice of sensitizer and electrolyte, and the study did not explore the optimization of these components.
1：Experimental Design and Method Selection:
The study involved the fabrication of SSCs with five different sensitizers and characterization of their performance.
2：Sample Selection and Data Sources:
Five types of sensitizers were used: curcumin, chlorophyll, CAD5, CAD7, and CdS.
3：List of Experimental Equipment and Materials:
Phthaloylchitosan (PhCh), polyethylene oxide (PEO), tetrapropylammonium iodide (TPAI), ethylene carbonate (EC), dimethylformamide (DMF), iodine crystal, 1-butyl-3-methylimidazolium iodide (BMII), fluorine tin oxide (FTO) glass, TiO2 powder, HNO3, polyethylene glycol (PEG), surfactant, ethanol, cadmium nitrate (Cd(NO3)2), sodium Sulphide (Na2S).
4：Experimental Procedures and Operational Workflow:
Preparation of GPE, deposition of TiO2 layers to the photoanode, deposition of natural and synthetic sensitizers to the photoanode, fabrication of SSCs, and performance evaluation through current density–voltage characteristics and electrochemical impedance spectroscopy.
5：Data Analysis Methods:
The performance parameters (Jsc, Voc, FF, PCE) were calculated from the J–V characteristics, and interfacial parameters were obtained from Nyquist plots.
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phthaloylchitosan
Used as a gel polymer electrolyte in sensitized solar cells.
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polyethylene oxide
Used in the preparation of gel polymer electrolyte.
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tetrapropylammonium iodide
Used as a component in the liquid electrolyte for the gel polymer electrolyte.
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ethylene carbonate
Used as a component in the liquid electrolyte for the gel polymer electrolyte.
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dimethylformamide
Used as a component in the liquid electrolyte for the gel polymer electrolyte.
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1-butyl-3-methylimidazolium iodide
Added to improve ionic conductivity of the gel polymer electrolyte.
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fluorine tin oxide glass
Used as a substrate for the photoanode in sensitized solar cells.
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TiO2 powder
14 nm and 21 nm size
Used to deposit blocking and mesoporous layers on the photoanode.
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cadmium nitrate
Used in the deposition of CdS quantum dots to the photoanode.
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sodium Sulphide
Used in the deposition of CdS quantum dots to the photoanode.
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