Optimizing molecular light absorption in the strong coupling regime for solar energy harvesting
- Univ. of Michigan, Ann Arbor, MI (United States); OSTI
- Univ. of Michigan, Ann Arbor, MI (United States)
The strong coupling of optical absorbers (e.g., molecules or semiconductors) to confined photonic modes fundamentally alters the physical properties of the coupled system via the formation of hybrid light-matter states. One potential application of strong light-matter coupling relies on exploiting it to localize light-induced charge excitation processes to small volumes of material. Applications that would benefit from this localization include thin-film photovoltaics, photodetection, photocatalysis, and others, where the overall performance depends on the ability of a material to amplify light absorption (i.e., the formation of electron-hole pairs) within specific locations in space. This contribution investigates how strong light-matter coupling affects light absorption rates in molecular absorbers coupled to photonic nanostructures. Here, our results show that the molecular light absorption efficiencies are highest in configurations where the strongly coupled molecules interact directly with the incoming photon flux. We also identify a nonlinear dependence in the molecular absorption as a function of concentration, unique to the strongly coupled systems. Based on these results, we propose design principles for engineering nanostructured systems that allow for high efficiencies of charge carrier localization into strongly coupled absorbers.
- Research Organization:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0021362
- OSTI ID:
- 1977479
- Journal Information:
- Nano Energy, Journal Name: Nano Energy Vol. 98; ISSN 2211-2855
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Non-adiabatic molecular dynamics of molecules in the presence of strong light-matter interactions
Flow and extraction of energy and charge carriers in hybrid plasmonic nanostructures
Journal Article
·
Thu Oct 17 20:00:00 EDT 2019
· Journal of Chemical Physics
·
OSTI ID:1601401
Flow and extraction of energy and charge carriers in hybrid plasmonic nanostructures
Journal Article
·
Sun Jan 03 19:00:00 EST 2021
· Nature Materials
·
OSTI ID:2338311