Charge-Transfer States at Organic-Organic Interfaces: Impact on Charge Recombination Processes
a Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona 85721-0088, United States
Online Conference
Proceedings of NFA-Based Organic Solar Cells: Materials, Morphology and Fundamentals (NFASC)
Online, Spain, 2021 February 3rd - 4th
Organizers: Natalie Banerji and Feng Gao
Invited Speaker, VEACESLAV COROPCEANU, presentation 013
Publication date: 25th January 2021

The charge-transfer states formed at the donor-acceptor interfaces mediate exciton dissociation, charge generation, and charge recombination processes in organic electronic devices such as solar cells and  light emitting diodes. Here, we assess the current understanding of charge-transfer states and describe how factors such as electronic-state hybridization, electronic polarization, interface geometry, static and dynamic disorders affect their nature [1]. The influence of these factors on radiative and non-radiative geminate recombination processes will be then illustrated. New features of the charge-transfer states, which emerged from the recent development of organic solar cells based on non-fullerene acceptors and exciplex based organic light emitting diodes exploiting the thermally activated delayed fluorescence effect  will be also discussed.

This work was funded by the Department of the Navy, Office of Naval Research, under Award No. N00014-20-1-2110 and College of Science at the University of Arizona.

© Fundació Scito
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