Local Optical Properties in CVD-Grown Monolayer WS<sub>2</sub> Flakes
M. Magnozzi, Theo Pflug, Marzia Ferrera, Simona Pace, Lorenzo Ramó, Markus Olbrich, Paolo Canepa, Hasret Ağırcan, Alexander Horn, Stiven Forti, Ornella Cavalleri, Camilla Coletti, Francesco Bisio, M. Canepa
Abstract
. Comparing the ISE results with imaging photoluminescence spectroscopy data, the presence of several correlated features was observed, along with the unexpected existence of a few uncorrelated characteristics. The latter demonstrates that the exciton-induced absorption and emission features are not always proportional at the microscopic scale. Microstructural modulations across the flakes, having a different influence on the absorption and re-emission of light, are deemed responsible for the effect.
Topics & Concepts
MonolayerPhotoluminescenceExcitonAbsorption (acoustics)EllipsometryChemical vapor depositionMaterials scienceSpectroscopyAbsorption spectroscopyDielectricRadiative transferMolecular physicsOptoelectronicsChemical physicsThin filmOpticsChemistryNanotechnologyCondensed matter physicsPhysicsComposite materialQuantum mechanics2D Materials and ApplicationsPerovskite Materials and ApplicationsChalcogenide Semiconductor Thin Films