title: Controlled argon beam-induced desulfurization of monolayer molybdenum disulfide.
abstract: Sputtering of MoS2 films of single-layer thickness by low-energy argon ions selectively reduces the sulfur content of the material without significant depletion of molybdenum. X-ray photoelectron spectroscopy shows little modification of the Mo 3d states during this process, suggesting the absence of significant reorganization or damage to the overall structure of the MoS2 film. Accompanying ab initio molecular dynamics simulations find clusters of sulfur vacancies in the top plane of single-layer MoS2 to be structurally stable. Measurements of the photoluminescence at temperatures between 175 and 300 K show quenching of almost 80% for an ~10% decrease in sulfur content.
authors.affiliation: Chemistry, Physics, and Materials Science and Engineering, University of California, Riverside, CA 92521, USA.
authors.forename: Quan
authors.initials: Q
authors.lastname: Ma
authors.forename: Patrick M
authors.initials: PM
authors.lastname: Odenthal
authors.forename: John
authors.initials: J
authors.lastname: Mann
authors.forename: Duy
authors.initials: D
authors.lastname: Le
authors.forename: Chen S
authors.initials: CS
authors.lastname: Wang
authors.forename: Yeming
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authors.lastname: Zhu
authors.forename: Tianyang
authors.initials: T
authors.lastname: Chen
authors.forename: Dezheng
authors.initials: D
authors.lastname: Sun
authors.forename: Koichi
authors.initials: K
authors.lastname: Yamaguchi
authors.forename: Tai
authors.initials: T
authors.lastname: Tran
authors.forename: Michelle
authors.initials: M
authors.lastname: Wurch
authors.forename: Jessica L
authors.initials: JL
authors.lastname: McKinley
authors.forename: Jonathan
authors.initials: J
authors.lastname: Wyrick
authors.forename: KatieMarie
authors.initials: K
authors.lastname: Magnone
authors.forename: Tony F
authors.initials: TF
authors.lastname: Heinz
authors.forename: Talat S
authors.initials: TS
authors.lastname: Rahman
authors.forename: Roland
authors.initials: R
authors.lastname: Kawakami
authors.forename: Ludwig
authors.initials: L
authors.lastname: Bartels