Effect of Halogen/Chalcogen Substitution on the Dielectric Constant of Asymmetric Acceptor Alloys to Improve the Efficiency and Stability of Inverted Organic Photovoltaics

The dielectric constant (εᵣ) of non-fullerene acceptors is a key parameter in organic solar cells, significantly influencing exciton dissociation efficiency and charge recombination dynamics. Substituting bromine, characterized by moderate electronegativity...