研究目的
Investigating the effect of benzoic acid doping on the oxidation process of spiro-OMeTAD and its impact on the performance of perovskite solar cells.
研究成果
Doping spiro-OMeTAD with benzoic acid enhances its oxidation process and hole transport properties, leading to improved performance of perovskite solar cells. The optimal doping concentration was found to be 3 mol%, achieving a power conversion efficiency of 16.26%.
研究不足
The study focuses on the effect of benzoic acid doping on spiro-OMeTAD and does not explore other acid dopants or their combinations. The long-term stability of the doped spiro-OMeTAD layers under operational conditions is not addressed.
1：Experimental Design and Method Selection:
The study involves doping spiro-OMeTAD with benzoic acid to investigate its effect on the oxidation process and hole transport properties.
2：Sample Selection and Data Sources:
Perovskite solar cells were fabricated with different concentrations of benzoic acid in the spiro-OMeTAD layer.
3：List of Experimental Equipment and Materials:
Materials include spiro-OMeTAD, benzoic acid, Li-TFSI, and other chemicals for perovskite solar cell fabrication. Equipment includes spin-coaters, SEM, UV-vis spectrophotometer, and solar simulators.
4：Experimental Procedures and Operational Workflow:
The spiro-OMeTAD solution was doped with benzoic acid at varying concentrations, spin-coated onto perovskite layers, and characterized for morphology, conductivity, and solar cell performance.
5：Data Analysis Methods:
The performance of the solar cells was analyzed through J-V curves, EQE measurements, and impedance spectroscopy.
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