Electronic and Structural Properties of Defects in Few Layer Molybdenum Disulfide Films

POSTER

Abstract

Molybdenum disulfide (MoS2) has emerged as an attractive candidate for next-generation 2D electronic devices yet the exact role of defects on its electronic properties is still not well understood. In this study we employ scanning tunneling microscopy and spectroscopy, transmission electron microscopy and kelvin probe force microscopy to obtain quantitative measurements of the local density of states, work function and nature and mobility of these defects. The defects investigated include individual point defects such as sulfur and molybdenum vacancies and extended defects like grain boundaries and film edges.

*This work was supported as part of the Center for Complex Materials from First Principles, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, under Grant No. DE-SC0012575.
The electron microscopy facilities at BNL were supported by the Materials Science and Engineering Divisions, Office
of Basic Energy Sciences of the U.S. Department of Energy under Contract # DE-SC0012704.

Presenters

  • Marcus Forst

    • Department of Physics, Temple University

Authors

  • Marcus Forst

    • Department of Physics, Temple University

  • Dan Trainer

    • Physics Department, Temple University
    • Department of Physics, Temple University

  • Marian Precner

    • Department of Physics, Drexel University

  • Tomas Polakovic

    • Department of Physics, Drexel University
    • Physics Division, Argonne National Laboratory
    • Materials Science Division, Argonne National Laboratory

  • Qiao Qiao

    • Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory

  • Yimei Zhu

    • Department of Energy Science and Technology, Upton, New York 11973, USA, Brookehaven National Laboratory
    • Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory
    • Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory
    • Brookhaven National Laboratory
    • CMPMSD, Brookhaven National Laboratory
    • 2Condensed Matter Physics and Materials Science Departement, Brookhaven National Laboratory

  • Xiaoxing Xi

    • Physics Department, Temple University
    • Department of Physics, Temple University
    • Physics, Temple University
    • Temple University

  • Goran Tripun Karapetrov

    • Department of Physics, Drexel University

  • Maria Iavarone

    • Physics Department, Temple University
    • Department of Physics, Temple University
    • Physics, Temple University