A colloidal route to semiconducting tungsten disulfide nanosheets with monolayer thickness
Gabriele Pippia, Diem Van Hamme, Beatriz Martín‐García, Mirko Prato, Iwan Moreels
Abstract
using a design of experiment (DOE) approach. After optimization, we obtained nanosheets with a band gap transition consistent with the expected value for a monolayer. The thickness was further confirmed by Raman spectroscopy. While we could identify two temperature ranges where we could obtain a monolayer, sample characterization by XPS spectroscopy revealed the presence of different ratios of the metallic phase, with the sample synthesized at lower temperature displaying a lower concentration of the metallic phase.
Topics & Concepts
MonolayerTungsten disulfideMaterials scienceColloidTungstenNanotechnologyMolybdenum disulfideAbsorption (acoustics)Band gapDisulfide bondChemical engineeringOptoelectronicsComposite materialChemistryMetallurgyEngineeringBiochemistry2D Materials and ApplicationsPerovskite Materials and ApplicationsQuantum Dots Synthesis And Properties