-A A +A
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-molecular interactions. Such fundamental observation, revealing the specific role of the ground-state intra-and inter-molecular coupling in selectively assisting …
Nature Publishing Group
Publication date: 
19 Nov 2019

Giuseppina Pace, Ilaria Bargigia, Yong-Young Noh, Carlos Silva, Mario Caironi

Biblio References: 
Volume: 10 Issue: 1 Pages: 1-11
Nature communications