[15p-K405-1~15] 12.5 Organic and hybrid solar cells

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)

[15p-K405-3] Semiconducting Polymers Utilizing a π-Extended Quinoxaline Framework: The Impact of Donor Units on Their Photovoltaic Performance

〇Hiroki Mori¹, Hiroki Yamane², Chihiro Shirayama², Yasushi Nishihara¹ (1.RIIS, Okayama Univ., 2.Grad. Sch. of Environ., Life, Nat. Sci. and Tech., Okayama Univ.)

Keywords:

semiconducting polymers,organic solar cells,conjugated polymers

To enhance the open-circuit voltage of organic solar cells utilizing semiconducting polymers based on a vinylene-bridged bis(difluoroquinoxaline) (FQxE) as an acceptor and terthiophene as a donor, we synthesized two FQxE-based semiconducting polymers incorporating distinct donor units. Additionally, we systematically investigated the impact of these donor units on the polymer’s physicochemical properties, thin-film structures, and the photovoltaic performance of organic solar cells paired with representative low-bandgap n-type semiconductors.