研究目的
Investigating the enhancement of power conversion efficiency in ternary organic solar cells through the incorporation of PC61BM as a guest acceptor into the PM6:ITC6-4F composite.
研究成果
Incorporating a small amount of PC61BM as a guest acceptor improves the photovoltaic performance of PM6:ITC6-4F-based OSCs with efficient F?rster resonance energy transfer from PC61BM to ITC6-4F. A more suitable morphology with enhanced molecular packing and crystallinity was induced, delivering a more balanced charge mobility associated with enhanced charge transport and reduced energy loss. The ternary device reveals an outstanding PCE of 15.11%.
研究不足
The study is limited by the intrinsic properties of the materials used, such as insufficient photon harvesting and low charge mobility, which may impede further improvement of photovoltaic performance.
1：Experimental Design and Method Selection:
The study employed an inverted device structure using ZnO as the electron transport layer upon ITO layer. The PM6:ITC6-4F:PC61BM ternary blends were dissolved in chloroform with the addition of
2：5% DIO as additive. Sample Selection and Data Sources:
The ratio of ITC6-4F:PC61BM was varied from 1:0 to 0:1, maintaining the overall ratio of donor:acceptors at 1:
3：List of Experimental Equipment and Materials:
Materials included PM6, PC61BM, and ITC6-4F. Instruments used were atomic force microscopy (AFM), transmission electron microscopy (TEM), and grazing incidence wide-angle X-ray scattering (GIWAXS).
4：4F. Instruments used were atomic force microscopy (AFM), transmission electron microscopy (TEM), and grazing incidence wide-angle X-ray scattering (GIWAXS). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The solutions were prepared with a total concentration of 15 mg mL-1 and stirred over 12 h at room temperature. The blend films were thermal annealing at 100 °C for 10 min before evaporation of MoO3 and Ag.
5：Data Analysis Methods:
The space charge limited current (SCLC) method was employed to explore charge transport properties. Photocurrent measurement was carried out to analyze charge recombination behavior.
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