Transition metal dichalcogenides (TMDC) have attracted significant research attention recently. This especially concerns monolayer TMDCs in relation to their exceptional optical properties, such as direct bandgap, strong exciton binding energy, high oscillator strength, and valley polarization degree of freedom. These properties make monolayer TMDCs very promising for the development of novel strong light-matter hybrids, such as plasmon-exciton polaritons, that I will discuss in this lecture (1, 2). However, in addition to interesting exciton physics, these materials possess very high refractive indexes, which makes them promising for the development of high-index nanophotonics applications. In this talk, I will describe how multilayer TMDCs support self hybridization between optical and excitonic modes, which leads to enhanced optical absorption across the entire visible range (3). I will also discuss how nanodisks fabricated out of multilayer TMDCs (see Figure 1) support geometrical Mie resonances, including a peculiar anapole state and even more exotic anapole-exciton hybridization in the strong coupling regime (4).

Transition metal dichalcogenide nanostructures for nanophotonics and strong light-matter interactions

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.