研究目的
Investigating the design and performance of acceptor-donor-acceptor triads for near infrared photovoltaics application.
研究成果
The PPAB-based triad (T3) exhibited the highest power conversion efficiency of 3.88% due to its panchromatic absorption in the UV/vis/NIR regions, demonstrating the potential of PPAB-based small molecules in photovoltaic applications.
研究不足
The study is limited to the synthesis and characterization of three specific triads and their preliminary photovoltaic performance. Further optimization and scalability studies are needed.
1：Experimental Design and Method Selection:
The study involved the synthesis of triads (T1–T3) via a Stille coupling reaction and their characterization for optical and electrochemical properties.
2：Sample Selection and Data Sources:
Bromo-substituted DPP (DPP-Br) or PPAB (PPAB-Br) and bis(trimethylstannyl)-CPDT (CPDT-2SnMe3) were used as starting materials.
3：List of Experimental Equipment and Materials:
High-resolution mass spectrometry and 1H NMR spectroscopy were used for characterization.
4：Experimental Procedures and Operational Workflow:
The triads were synthesized, characterized, and their photovoltaic properties were investigated using BHJ-OPVs with an inverted device structure.
5：Data Analysis Methods:
Cyclic voltammetry, UV/vis/NIR absorption spectra, and TEM were used for analysis.
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