Temperature Dependence of the Photoconduction in the Few-Layered ReSe<sub>2 </sub>Field-Effect Transistor

ORAL

Abstract

We will present the photo response of the few-layered ReSe2 field-effect transistor fabricated using mechanically exfoliated crystals grown using the chemical vapor transport method. The temperature dependence of the photoconductivity was measured as a function of temperature from 20 K to 300 K using a continuous laser source (λ = 640 nm; E = 1.94eV), over a broad range of illuminating laser power, Peff (0.2 nW < Peff < 84 nW). We measured the power dependence of the steady state photocurrent (Iph) on Peff (Iph ~ (Peff)γ, where 0.3 ≤ γ ≤ 0.8). The highest responsivity (R) and external quantum efficiency (EQE) obtained from the few-layered ReSe2 phototransistors at Peff = 0.2 nW were ~ 2150 A/W and 105 %, respectively. These findings and the temperature dependence of the photoconductivity as a function of gate voltage will be presented.

*This work was performed, in part, at the Center for Nanoscale Materials, a U.S. Department of Energy Office of Science User Facility, and supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357. This work was also supported by NSF-PREM through NSF-DMR # 1826886 and partially supported by the U.S. Army Research Office MURI grant # W911NF-11-1-0362.

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Presenters

  • Prasanna Dnyaneshwar Patil

    • Department of Physics, Southern Illinois University Carbondale, Carbondale, IL, USA
    • Department of Physics, Southern Illinois University Carbondale, IL-62901, USA.
    • Physics, Southern Illinois University Carbondale
    • Department of Physics, Southern Illinois University Carbondale

Authors

  • Prasanna Dnyaneshwar Patil

    • Department of Physics, Southern Illinois University Carbondale, Carbondale, IL, USA
    • Department of Physics, Southern Illinois University Carbondale, IL-62901, USA.
    • Physics, Southern Illinois University Carbondale
    • Department of Physics, Southern Illinois University Carbondale

  • Milinda Wasala

    • Department of Physics, Southern Illinois University Carbondale, Carbondale, IL, USA
    • Department of Physics, Southern Illinois University Carbondale, IL-62901, USA.
    • Southern Illinois University Carbondale
    • Physics, Southern Illinois University Carbondale
    • Department of Physics, Southern Illinois University Carbondale

  • Rana Alkhaldi

    • Department of Physics, Southern Illinois University Carbondale, Carbondale, IL, USA
    • Department of Physics, Southern Illinois University Carbondale, IL-62901, USA.
    • Physics, Southern Illinois University Carbondale

  • Lincoln Weber

    • Department of Physics, Southern Illinois University Carbondale, Carbondale, IL, USA
    • Department of Physics, Southern Illinois University Carbondale, IL-62901, USA.

  • Kiran Kumar Kovi

    • Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL-60439, USA.

  • Bhaswar Chakrabarti

    • Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL-60439, USA.

  • Daniel A Rhodes

    • Columbia University
    • Physics, Columbia University
    • National High Magnetic Field Laboratory, Tallahassee, FL-32310, USA.
    • Columbia Nano Initiative, Columbia University
    • Department of Mechanical Engineering, Columbia University, New York, NY 10027 USA
    • Mechanical Engineering, Columbia University
    • Columbia Univ

  • Daniel Rosenmann

    • Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL-60439, USA.

  • Ralu Divan

    • Argonne National Laboratory
    • Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL-60439, USA.
    • Center for Nanoscale Materials, Argonne National Laboratory

  • Anirudha Sumant

    • Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL-60439, USA.

  • Luis Balicas

    • National High Magnetic Field Laboratory, Tallahassee, FL-32310, USA.
    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory FSU
    • National High Magnetic Field Lab, Florida State University, Tallahassee, USA
    • NHMFL

  • Nihar R Pradhan

    • Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS-39217, USA.

  • Saikat Talapatra

    • Department of Physics, Southern Illinois University Carbondale, Carbondale, IL, USA
    • Department of Physics, Southern Illinois University Carbondale, IL-62901, USA.
    • Southern Illinois University Carbondale
    • Physics, Southern Illinois University Carbondale
    • Department of Physics, Southern Illinois University Carbondale