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Updated: Jul 13, 2025
07:39
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
6.8K
Exploring plasmonic effect on exciton transport: A theoretical insight from macroscopic quantum electrodynamics
Shih-Han Weng1,2, Liang-Yan Hsu1,2,3, Wendu Ding4
1Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan.
The Journal of Chemical Physics
|October 16, 2023
Summary
We explored plasmon-coupled exciton transport in molecular chains using advanced theory. Coupling excitons to silver nanorods significantly enhances transport efficiency, crucial for photovoltaic applications.
Area of Science:
- Condensed matter physics
- Materials science
- Quantum chemistry
Background:
- Exciton transport is key for energy and optical applications.
- Manipulating exciton transport in complex environments remains a challenge.
Purpose of the Study:
- Investigate plasmon-coupled exciton transport mechanisms.
- Understand how silver nanorods influence exciton diffusion.
- Explore potential for enhanced photovoltaic applications.
Main Methods:
- Utilized the Pauli master equation approach.
- Incorporated kinetic rates from macroscopic quantum electrodynamics.
- Modeled exciton transport in molecular chains coupled to silver nanorods.
Main Results:
- Silver nanorods induce frequency-dependent exciton transport due to dielectric response.
- Coupling to localized surface plasmon polaritons enhances exciton diffusion by up to 1000x compared to vacuum.
- Long-range coupling effects are significant, with nearest-neighbor approximations underestimating diffusion coefficients.
Conclusions:
- Plasmonic nanostructures offer powerful control over exciton transport.
- Enhanced exciton diffusion via plasmon coupling is promising for photovoltaic devices.
- Theoretical framework provides insights for designing plasmon-assisted energy applications.
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