Surface Properties of Laser-Treated Molybdenum Disulfide Nanosheets for Optoelectronic Applications.

ABSTRACT: Transition metal dichalcogenide two-dimensional materials have attracted significant attention due to their unique optical, mechanical, and electronic properties. For example, molybdenum disulfide (MoS₂) exhibits a tunable band gap that strongly depends on the numbers of layers, which makes it an attractive material for optoelectronic applications. In addition, recent reports have shown that laser thinning can be used to engineer an MoS₂ monolayer with specific shapes and dimensions. Here, we study laser-thinned MoS₂ in both ambient and vacuum conditions via confocal μ-Raman spectroscopy, imaging X-ray photoelectron spectroscopy (i-XPS), and atomic force microscopy (AFM). For low laser powers in ambient environments, there is insufficient energy to oxidize

SUBMITTER: Alrasheed A 

PROVIDER: S-EPMC6615047 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature