研究目的
To enhance photon harvesting in the near‐infrared region and improve the power conversion efficiency of polymer solar cells by incorporating a non‐fullerene molecule named Y6 into a binary blend of PBDB‐T and IT‐M.
研究成果
The incorporation of Y6 into PBDB‐T/IT‐M binary blends significantly improved the JSC and PCE of the ternary blend polymer solar cells. The study demonstrated efficient energy transfer from IT‐M to Y6 and highlighted the importance of the aggregation state of Y6 in determining the device performance. The findings suggest that the careful selection of material combinations can control dye aggregation and enhance the efficiency of polymer solar cells.
研究不足
The study is limited by the specific materials and compositions used, and the findings may not be generalizable to other systems. The spectral changes observed with Y6 are dependent on its aggregation state, which is sensitive to the surface energy of component materials.
1：Experimental Design and Method Selection:
The study involved the incorporation of Y6 into PBDB‐T/IT‐M binary blends to form ternary blend polymer solar cells. The methodology included the fabrication of devices with different compositions and the measurement of their photovoltaic performance.
2：Sample Selection and Data Sources:
The materials used included PBDB‐T, IT‐M, Y6, and PFN‐Br, purchased from Solarmer Materials, Incorporated. The devices were fabricated with a structure of ITO/PEDOT:PSS/active layers/PFN‐Br/Al.
3：List of Experimental Equipment and Materials:
Instruments used included a spectrophotometer (Hitachi, U‐4100), a spectrofluorometer (Horiba Jobin Yvon, NanoLog), and a photoelectron yield spectrometer (Riken Keiki, AC‐3).
4：3). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The active layer was prepared by spin coating, and the devices were characterized by measuring J–V characteristics, EQE spectra, and absorption and PL spectra.
5：Data Analysis Methods:
The data were analyzed to determine the photovoltaic parameters and to study the energy transfer and aggregation states of Y6.
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