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Hydrogenation-induced atomic stripes on the 2H-MoS2 surface

Title
Hydrogenation-induced atomic stripes on the 2H-MoS2 surface
Author(s)
Han, Sang WookYun, Won SeokLee, J. D.Hwang, Y. H.Baik, J.Shin, H. J.Lee, Wang G.Park, Young S.Kim, Kwang S.
DGIST Authors
Han, Sang WookYun, Won SeokLee, J. D.Hwang, Y. H.Baik, J.Shin, H. J.Lee, Wang G.Park, Young S.Kim, Kwang S.
Issued Date
2015-12
Type
Article
Article Type
Article
Keywords
CONTACTSElectronicsFabricationMECHANISMMONOLAYER MOS2TRANSISTORSTRANSITION-METAL DICHALCOGENIDESNANOSHEETSPHOTOLUMINESCENCESINGLE-LAYER MOS2
ISSN
1098-0121
Abstract
We report that the hydrogenation of a single crystal 2H-MoS2 induces a novel-intermediate phase between 2H and 1T phases on its surface, i.e., the large-area, uniform, robust, and surface array of atomic stripes through the intralayer atomic-plane gliding. The total energy calculations confirm that the hydrogenation-induced atomic stripes are energetically most stable on the MoS2 surface between the semiconducting 2H and metallic 1T phase. Furthermore, the electronic states associated with the hydrogen ions, which is bonded to sulfur anions on both sides of the MoS2 surface layer, appear in the vicinity of the Fermi level (EF) and reduces the band gap. This is promising in developing the monolayer-based field-effect transistor or vanishing the Schottky barrier for practical applications. ©2015 American Physical Society.
URI
http://hdl.handle.net/20.500.11750/2795
DOI
10.1103/PhysRevB.92.241303
Publisher
American Physical Society
Related Researcher
  • 이재동 Lee, JaeDong 화학물리학과
  • Research Interests Theoretical Condensed Matter Physics; Ultrafast Dynamics and Optics; Nonequilibrium Phenomena
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Appears in Collections:
Department of Physics and Chemistry Light and Matter Theory Laboratory 1. Journal Articles

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