Frenkel biexcitons in hybrid HJ photophysical aggregates.
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ABSTRACT:
SUBMITTER: Gutierrez-Meza E
PROVIDER: S-EPMC8664265 | biostudies-literature | 2021 Dec
REPOSITORIES: biostudies-literature
Publications
Frenkel biexcitons in hybrid HJ photophysical aggregates.
Gutiérrez-Meza Elizabeth E Malatesta Ravyn R Li Hongmo H Bargigia Ilaria I Srimath Kandada Ajay Ram AR Valverde-Chávez David A DA Kim Seong-Min SM Li Hao H Stingelin Natalie N Tretiak Sergei S Bittner Eric R ER Silva-Acuña Carlos C
Science advances 20211210 50
Frenkel excitons are unequivocally responsible for the optical properties of organic semiconductors and are predicted to form bound exciton pairs (biexcitons). These are key intermediates, ubiquitous in many photophysical processes such as the exciton bimolecular annihilation dynamics in such systems. Because of their spectral ambiguity, there has been, to date, only scant direct evidence of bound biexcitons. By using nonlinear coherent spectroscopy, we identify here bound biexcitons in a model ...[more]
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