研究目的
Investigating the effects of ambient water on the fabrication of perovskite solar cells and developing a prenucleation strategy to improve device performance uniformity.
研究成果
The prenucleation strategy enables the fabrication of high-quality perovskite films in ambient atmosphere, leading to solar cells with high efficiency and performance uniformity. This method shows promise for industrial production.
研究不足
The study focuses on the fabrication process in ambient atmosphere but may not address all environmental variables. The scalability of the prenucleation strategy for industrial production needs further investigation.
1：Experimental Design and Method Selection
The study involves computational studies to analyze the perovskite film formation processes and experimental fabrication of perovskite solar cells using a prenucleation strategy in ambient atmosphere.
2：Sample Selection and Data Sources
Perovskite precursor solutions were prepared using materials like Methylammonium iodide (MAI) and PbI2 dissolved in DMF/DMSO mixed solution. The samples were characterized using SEM, XRD, UV-vis spectroscopy, and other techniques.
3：List of Experimental Equipment and Materials
Materials include MAI, PbI2, DMF, DMSO, anisole, PC61BM, PMMA, and PPDIN6. Equipment includes SEM (JEOL 7100 F), XRD (D8 Discover, Bruker AXS), UV-vis spectrometer (UV-1800, Shimadzu), and solar simulator (Newport, Oriel Sol3A).
4：Experimental Procedures and Operational Workflow
The prenucleation method involves a programmed sample spinning and multiple antisolvent dripping process to form a compact and uniform perovskite layer. The conventional method was used for comparison.
5：Data Analysis Methods
Data analysis included XRD pattern analysis, UV-vis absorption spectra analysis, and performance evaluation of the fabricated solar cells.
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