研究目的
Investigating the effect of Platinum Octaethylporphyrin(PtOEP) doping on the performance of PCPDTBT: PCBM solar cells.
研究成果
The incorporation of a small amount of PtOEP (1 mg) into PCPDTBT: PCBM blends significantly enhances the power conversion efficiency of solar cells by improving exciton dissociation and charge transport processes. Higher concentrations of PtOEP lead to reduced performance due to the formation of large aggregates and localized triplet excitons.
研究不足
The study is limited by the partial solubility of PtOEP in PCPDTBT: PCBM blends at higher concentrations, leading to the formation of large aggregates that affect film topography and solar cell performance.
1：Experimental Design and Method Selection:
The study involved doping PCPDTBT: PCBM blends with varying amounts of PtOEP to investigate its effect on solar cell performance.
2：Sample Selection and Data Sources:
PCPDTBT, PCBM, and PtOEP were purchased from Sigma-Aldrich. The blends were prepared in 1,2-dichlorobenzene.
3：List of Experimental Equipment and Materials:
Scanning Electron Microscope (SEM, JEOL model JSM-6510), Raman Spectrometer (Jasco NRS-2100), UV/Vis/NIR spectrophotometer (JASCO V-570), and impedance analyzer (Agilent 4284A).
4：Experimental Procedures and Operational Workflow:
Solar cells were fabricated with the configuration ITO/PEDOT: PSS/PCPDTBT: PCBM: PtOEP/Al. The effect of PtOEP on surface morphology, Raman spectra, optical absorbance, and photovoltaic properties was studied.
5：Data Analysis Methods:
The impedance spectroscopy data was analyzed using an equivalent circuit model to evaluate interface and recombination processes.
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