Palestra Prospects of multi-layered heterostructures and single photon sources based on 2D materials, ministrada pela Dra Bárbara L. T. Rosa - Technical University of Berlin (TU)

Semiconducting van der Waals devices have recently emerged as a powerful platform for exploring the novelty of the light-matter interaction field. Amongst the broad suitability of those systems, we highlight two distinct but equally relevant topics for the semiconductor community: twisted multi-layered heterostructures and fabrication of high-quality single-photon emitters (SPEs). In this talk, I will first present our recent study based on the investigation of inter- and intralayer exciton complexes in twisted bi- and trilayers, where we extracted through experimental and theoretical results a clear twist angle dependence of spin-valley properties that varies enormously from two to three twisted-layers. Next, we discuss the highlights of single-photon sources based on WSe2 monolayers. Though this topic has been widely reported in the literature, we address our efforts to explore the substrate dependence of non-classic light generation and, foremost, the quantum coherence properties of SPEs.