研究目的
Investigating the effects of plasma treatment on the photovoltaic properties of the active layer in bulk heterojunction solar cells, specifically focusing on zinc oxide nanoparticles:polyaniline blends.
研究成果
Plasma treatment of the active layer significantly affects its photovoltaic properties, with an optimum treatment time of ~2 minutes enhancing Voc and Jsc. Beyond this time, the properties degrade due to increased surface roughness and etching effects. The study provides insights into optimizing plasma treatment for improving solar cell performance.
研究不足
The study did not use any interlayer as HTL or ETL between the active layer and cathode/anode layers, leading to high recombination rates and low fill factor values. The exact values of charge carrier densities were not measured, focusing instead on the relative effects of plasma treatment.
1：Experimental Design and Method Selection:
The study involved spin-coating active layers of zinc oxide nanoparticles:polyaniline on indium tin oxide covered glasses and subjecting them to cold plasma treatment for varying times. The J-V characteristics were measured under standard illumination conditions.
2：Sample Selection and Data Sources:
Samples were prepared with a specific ratio of ZnO-NPs:PANI and treated under consistent conditions to ensure uniformity.
3：List of Experimental Equipment and Materials:
ITO covered substrates, ZnO-NPs, EB-PANI dispersions, aluminum electrodes, and a vacuum plasma setup were used.
4：Experimental Procedures and Operational Workflow:
The active layers were spin-coated, treated with plasma for different durations, and then characterized using J-V measurements, UV-Vis spectroscopy, AFM, and FT-IR.
5：Data Analysis Methods:
The data were analyzed to understand the impact of plasma treatment on the optical, electrical, and topological properties of the active layers.
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