Journal
NANOSCALE
Volume 14, Issue 19, Pages 7269-7279Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1nr08163b
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [91436102, 11374353]
- Fundamental Research Funds for the Central Universities [06500067]
Ask authors/readers for more resources
This paper theoretically investigates the nonlinear optical properties of a D-A conjugated organic molecule and proposes a method to enhance its properties using surface plasmon resonances and nonlinear optics. The results show a significant improvement in two-photon absorption by 10(6) times using a nonlinear plexciton method.
The nonlinear optical properties of a D-A (donor-acceptor) conjugated organic molecule with polythiophene (PT) as the donor and indene-C-60 bisadduct (IC(60)BA) as the acceptor are theoretically investigated, which exhibits a large two-photon absorption (TPA) cross-section up to 8000 GM at the wavelength of 780 nm. Combining surface plasmon resonances (SPRs) with nonlinear optics, nonlinear properties can be strongly enhanced. In this paper, an appropriate nonlinear plexciton method by the coupling of Au@Ag nanorods and an Ag film is designed, in which the TPA properties of the PT:IC(60)BA complex can be increased by 10(6) times. The angle dependence on polarization and incidence is investigated to obtain the maximum of plasmonic enhancement. Our results emphasize the physical mechanism of nonlinear plexcitons and provide a feasible method to improve the nonlinear properties of organic solar cell materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available