Naphthalene diimide-based random terpolymers with axisymmetric and asymmetric electron acceptors for controllable morphology and enhanced fill factors in all-polymer solar cells

Abstract

New NDI-based random terpolymer acceptors were designed by introducing axisymmetric and asymmetric electron-accepting units into NDI. Intermolecular arrangement and morphology were controlled, resulting in enhanced fill factors and device performance.