<i>In situ</i> exfoliated 2D molybdenum disulfide analyzed by XPS
Xinglu Wang, Christopher R. Cormier, Ava Khosravi, Christopher M. Smyth, Jeffrey R. Shallenberger, Rafik Addou, Robert M. Wallace
Abstract
Molybdenum disulfide, a two-dimensional transition metal dichalcogenide, was analyzed using in situ x-ray photoelectron spectroscopy (XPS). The XPS spectra obtained from a fresh surface which was exfoliated and annealed in ultrahigh vacuum include a survey scan, high resolution spectra of O 1s, C 1s, Mo 3d, S 2s, S 2p, Mo 3p, Mo 4p, S 3s, and the valence band. Quantitative analysis indicates a sulfur deficient surface composition of MoS1.8, and impurities were below the XPS detection limit.
Topics & Concepts
X-ray photoelectron spectroscopyMolybdenum disulfideMolybdenumSulfurAnalytical Chemistry (journal)Materials scienceSpectral lineIn situValence (chemistry)Transition metalImpurityChemistryCatalysisNuclear magnetic resonanceMetallurgyBiochemistryOrganic chemistryChromatographyAstronomyPhysics2D Materials and ApplicationsAdvanced Photocatalysis TechniquesMXene and MAX Phase Materials