期刊
CELL REPORTS PHYSICAL SCIENCE
卷 3, 期 4, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.xcrp.2022.100841
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资金
- European Research Council [ERC-2016-StG-714870]
- Spanish Ministry for Science, Innovation, and Universities (Agencia Estatal de Investigacion) through the QuantERA program of the European Commission [RTI2018-099737-B-I00, PCI2018-093145]
- Spanish Ministry for Science, Innovation, and Universities (Agencia Estatal de Investigacion) through Maria de Maeztu program for Units of Excellence in RD [CEX2018-000805-M]
- Ministerio de Economia y Competitividad [PID2019-109555GB-I00, RED2018-102815-T]
- Eusko Jaurlaritza [PIBA19-0004]
- Vagelos Institute for Energy Science and Technology at the University of Pennsylvania
In this work, it is shown that singlet fission dynamics can be accelerated under strong light-matter coupling. State mixing speeds up the dynamics when the lower polariton is close in energy to the multiexcitonic state. This effect is more pronounced in non-conventional singlet fission materials.
Polaritons are unique hybrid light-matter states that offer an alter-native way to manipulate chemical processes. In this work, we show that singlet fission dynamics can be accelerated under strong light-matter coupling. For superexchange-mediated singlet fission, state mixing speeds up the dynamics in cavities when the lower po-lariton is close in energy to the multiexcitonic state. This effect is more pronounced in non-conventional singlet fission materials in which the energy gap between the bright singlet exciton , the multiexcitonic state is large (> 0:1 eV). In this case, the dynamics is dominated by the polaritonic modes and not by the bare -mole-cule-like dark states, and, additionally, the resonant enhancement due to strong coupling is robust even for energetically broad molec-ular states. The present results provide a new strategy to expand the range of suitable materials for efficient singlet fission by making use of strong light-matter coupling.
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