Impact of substrates and quantum effects on exciton line shapes of 2D semiconductors at room temperature.

ABSTRACT: Exciton resonances in monolayer transition-metal dichalcogenides (TMDs) provide exceptionally strong light-matter interaction at room temperature. Their spectral line shape is critical in the design of a myriad of optoelectronic devices, ranging from solar cells to quantum information processing. However, disorder resulting from static inhomogeneities and dynamical fluctuations can significantly impact the line shape. Many recent works experimentally evaluate the optical properties of TMD monolayers placed on a substrate and the line shape is typically linked directly to the material's quality. Here, we highlight that the interference of the substrate and TMD reflections can strongly influence the line shape. We further show how basic, room-temperature reflection measurements allow investi

SUBMITTER: van de Groep J 

PROVIDER: S-EPMC11501823 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature