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CPOS Seminar: "Molecular Design and Synthesis of Green-Solvent Processable Organic Semiconductors"

Date and Time
Location
Hybrid: CPOS Conference Room - PSBN 2520D / Zoom
Speaker: ZIYUE ZHU, Graduate Student Researcher, Chemistry and Biochemistry Department, UCSB
Speaker: ZIYUE ZHU, Graduate Student Researcher, Chemistry and Biochemistry Department, UCSB

Speaker: ZIYUE ZHU, Graduate Student Researcher, Chemistry and Biochemistry Department, UCSB

Abstract: With the developing of near infrared (NIR) non-fullerene acceptors (NFAs), semitransparent organic optoelectronics such as solar cells and photodetectors have drawn intense research interest because of their ultra-thin film processibility, synthetic flexibility, and potential industry applications through low-cost solution-based techniques. The interaction of solvents and BHJ components has a significant effect on the film morphology and blends self-assembly. Except for achieving high efficiency in
fullerene-free optoelectronics with halogenated solvents, there is substantial focus on green solvent processing in device fabrications process for industrial scale of commercial market. Chlorine-free solvents such as toluene, xylene, tetrahydrofuran
(THF), and 2-methryl THF are preferentially chosen for green solvent processed organic optoelectronics. This presentation will be focusing on the molecular design and synthesis of a series of ultra-narrow bandgap A−D’−D−D’−A structured NFAs and the systematic study on molecular structures’ effects on materials’ processibility in the green solvent of 2-MeTHF and the corresponding thin-film properties.