研究目的
Exploring a fused 2-(thiophen-2-yl)thieno[3,2-b]thiophene (T-TT) building block to construct n-type polymer toward high performance all-polymer solar cells.
研究成果
The introduction of T-TT unit into the polymer backbone can afford a unique possibility for adjusting molecular arrangement, which simultaneously promote the light harvesting properties and charge carrier mobility, leading to improved photovoltaic performance in all-polymer solar cells.
研究不足
The study focuses on the comparison between PNDI-T-TT and PNDI-TVT polymers, and their blends with PBDB-T and J71 donor polymers. The limitations include the scope of donor polymers used and the specific conditions under which the devices were fabricated and tested.
1：Experimental Design and Method Selection:
The study involved the synthesis of new D-A polymer PNDI-T-TT and its comparison with PNDI-TVT polymer. The methodology included Stille coupling reaction for polymer synthesis, UV-vis absorption spectroscopy for optical properties, cyclic voltammetry for electrochemical properties, and device fabrication for photovoltaic performance evaluation.
2：Sample Selection and Data Sources:
The samples included synthesized polymers PNDI-T-TT and PNDI-TVT, and donor polymers PBDB-T and J
3：Data were obtained from laboratory experiments and measurements. List of Experimental Equipment and Materials:
Instruments used include UV-vis spectrophotometer, cyclic voltammetry setup, atomic force microscopy (AFM), transmission electron microscope (TEM), and grazing incident wide angle X-ray diffraction (GIWAXS). Materials included various chemicals for polymer synthesis and device fabrication.
4：Experimental Procedures and Operational Workflow:
The workflow involved polymer synthesis, characterization, device fabrication, and performance evaluation.
5：Data Analysis Methods:
Data were analyzed using statistical techniques and software tools for optical, electrochemical, and photovoltaic measurements.
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