研究目的
Investigating the fabrication of self-assembled surface-passivated perovskite thin films using a fluorinated polymer as an additive to improve the power conversion efficiency of perovskite solar cells.
研究成果
The self-assembled surface-layer P(VDF-TrFE) acts as a passivation layer of the perovskite/Spiro-OMeTAD interface and/or the grain boundary of the perovskite layer, significantly improving the device photovoltaic performance and reproducibility.
研究不足
The study notes that excess P(VDF-TrFE) addition leads to an increase in the series resistance, resulting in a deterioration of the photovoltaic performance. Further optimization of the device fabrication process is underway.
1：Experimental Design and Method Selection:
The study employed a one-step spin-coating method with a fluorinated polymer (FP) as an additive for fabricating perovskite thin films.
2：Sample Selection and Data Sources:
Mixed perovskite precursor solutions were prepared with FAI, PbI2, CsI, thiosemicarbazide, and P(VDF-TrFE) or P(VDF-TeFE) dissolved in a DMF:1-cyclohexyl-2-pyrrolidone mixed solvent.
3：List of Experimental Equipment and Materials:
FTO-coated glass substrates, TiO2 layer, perovskite precursor solutions, Spiro-OMeTAD solution, and Ag electrode.
4：Experimental Procedures and Operational Workflow:
The perovskite solution was spin-cast onto TiO2 films, followed by thermal annealing. A Spiro-OMeTAD-based solution was spin-cast atop the perovskite layer, and a back-Ag electrode was thermally deposited.
5：Data Analysis Methods:
The study used SEM, AFM, XPS, UV-vis absorbance, XRD, and PL spectra for characterization.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
