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Title: Influences of water molecules on the electronic properties of atomically thin molybdenum disulfide
Authors: Zhang, Kang
Wang, Xingli
Sun, Leimeng
Zou, Jianping
Wang, Jingyuan
Liu, Zheng
Chen, Tupei
Tay, Beng Kang
Zhang, Qing
Keywords: Chemical compounds
Inorganic compounds
Issue Date: 2017
Source: Zhang, K., Wang, X., Sun, L., Zou, J., Wang, J., Liu, Z., et al. (2017). Influences of water molecules on the electronic properties of atomically thin molybdenum disulfide. Applied Physics Letters, 111(4), 043106-.
Series/Report no.: Applied Physics Letters
Abstract: Although it is well known that the performances of two-dimensional transition metal dichalcogenide (2D-TMD) based devices are strongly affected by humidity, the roles of water molecules in the electronic properties of 2D-TMDs are still unclear. In this work, the influence of water molecules on the electrical properties of monolayer molybdenum disulfide (MoS2) is studied systemically using the dielectric force microscopy (DFM) technique. Taking the advantage of the DFM technique and other nondestructive characterization techniques, the electronic properties (surface potential, dielectrics, and carrier mobility) of atomically thin MoS2 exposed to different levels of humidity are investigated. Furthermore, Raman spectroscopy manifested the correlation between the optical phonon and the mobility drop of MoS2 flakes when subjected to humidity variations. Our results provide an in-depth understanding of the mechanism of water molecules interacting with MoS2.
ISSN: 0003-6951
DOI: 10.1063/1.4996731
Rights: © 2017 American Institute of Physics (AIP). This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics (AIP). The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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