研究目的
To achieve high-efficiency blade-coated organic solar cells (OSCs) by suppressing the excessive aggregation of non-fullerene acceptor using polymer additive N2200.
研究成果
The addition of N2200 effectively suppresses the excessive aggregation of non-fullerene acceptors in blade-coated OSCs, leading to improved device performance. Large-area devices (1.0 cm2) achieved high efficiencies, demonstrating the potential for scalable production of high-performance OSCs.
研究不足
The study focuses on specific blends of materials (PM6:IT-4F and PM6:Y6) and the effect of N2200 additive. The applicability to other material systems and the long-term stability of the devices were not extensively explored.
1：Experimental Design and Method Selection
The study involved the fabrication of OSCs using blade-coating and spin-coating methods, with the addition of N2200 to suppress the aggregation of non-fullerene acceptors.
2：Sample Selection and Data Sources
Active layers were prepared using blends of PM6:IT-4F and PM6:Y6, with and without the addition of N2200.
3：List of Experimental Equipment and Materials
ITO-coated glass substrates, PEDOT:PSS, PM6, IT-4F, Y6, N2200, PNDIT-F3N, Ag.
4：Experimental Procedures and Operational Workflow
Substrates were cleaned and treated with plasma before coating with PEDOT:PSS. Active layer solutions were prepared and coated using spin-coating or blade-coating methods. Devices were completed with the evaporation of Ag electrodes.
5：Data Analysis Methods
Photovoltaic performance was characterized using J–V curves and EQE measurements. Morphology was investigated using AFM, TEM, XRD, and GIWAXS.
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