Intrinsically distinct hole and electron transport in conjugated polymers controlled by intra and intermolecular interactions.

ABSTRACT: It is still a matter of controversy whether the relative difference in hole and electron transport in solution-processed organic semiconductors is either due to intrinsic properties linked to chemical and solid-state structure or to extrinsic factors, as device architecture. We here isolate the intrinsic factors affecting either electron or hole transport within the same film microstructure of a model copolymer semiconductor. Relatively, holes predominantly bleach inter-chain interactions with H-type electronic coupling character, while electrons' relaxation more strongly involves intra-chain interactions with J-type character. Holes and electrons mobility correlates with the presence of a charge transfer state, while their ratio is a function of the relative content of intra- and inter-mo

SUBMITTER: Pace G 

PROVIDER: S-EPMC6863910 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature