研究目的
Investigating the effects of backbone fluorination in bulk-heterojunction polymer solar cells with perylenediimide acceptors on morphology, energy loss, and carrier dynamics.
研究成果
The study demonstrates that pairing PDIs with highly fluorinated donor polymers significantly enhances PSC performance by optimizing BHJ morphology, reducing energy loss, and improving charge carrier dynamics. The findings suggest a promising direction for the development of high-performance PDI-based PSCs.
研究不足
The study focuses on a specific pair of donor polymers and a single acceptor, which may limit the generalizability of the findings. The computational analysis is based on oligomer models, which may not fully capture the behavior of the actual polymers in the solid state.
1：Experimental Design and Method Selection:
The study compares the performance of PSCs using fluorine-poor PBDTT-FTTE and fluorine-rich PBDTTF-FTTE donor polymers paired with Ph(PDI)3 acceptor. Techniques include UPS, AFM, TEM, GIWAXS, SCLC, light intensity dependence measurements, and fs/ns TA spectroscopy.
2：Sample Selection and Data Sources:
BHJ films were prepared by blending the polymers with Ph(PDI)3 in a 1:1 mass ratio in additive-free o-dichlorobenzene.
3：List of Experimental Equipment and Materials:
Instruments used include UPS, AFM, TEM, GIWAXS, SCLC, and fs/ns TA spectroscopy setups.
4：Experimental Procedures and Operational Workflow:
The photovoltaic response was assessed in ITO/ZnO/AL/MoO3/Ag PSC architectures. Morphology was investigated by AFM, TEM, and GIWAXS. Charge transport was evaluated using SCLC.
5：Data Analysis Methods:
Data from TA spectroscopy and light intensity dependence measurements were analyzed to understand charge photogeneration, recombination, and transport.
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
