MoS/ZnS heterojunctions via sulfurization: thin film deposition and characterizations

ORAL

Abstract

Sulfurization of molybdenum oxides to produce thin films of Mo(II)S was investigated concerning the structures, electrical and optical properties of teh resulted materials. The weak interlayer coupling of layer compounds facilitates ease of growth into 2D materials or heterojunction structures with other 3D counterparts. In this work, we focused on the superlattices of MoS/ZnS through substitution of oxygen with sulfur atoms starting from their pristine form of MoO/ZnO superlattices mostly put on sapphire substrates, though other substrates have also been used. The chemical substitution was conducted by vaporizing sulfur powders at a proper temperature to achieve a suitable vapor pressure by which the reaction could reach completion. The samples thus obtained were characterized by various techniques of X-ray diffraction (XRD) and grazing incidence reflectivity (XRR) measurements from which the crystal structure, interface smoothness and mass density of the constituent layers can be determined. Variable-temperature magneto-transport behaviors and luminescence properties will be discussed in relation to the material processing conditions of the sulfide-based quantum-well structures.

*Grant No. 105-2221-E-110 -042 - Ministry of Science and Technology, Taiwan.

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Presenters

  • Shih Huang

    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

Authors

  • Shih Huang

    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Wanchen Hsieh

    • International College of Semiconductor Technology, Natl Chiao-Tung University
    • Physics, Natl Sun Yat Sen Univ

  • P. V. Wadekar

    • Physics, Natl Sun Yat-Sen University
    • Natl Sun Yat-Sen Univ
    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Che Min Lin

    • Physics, Natl Sun Yat-Sen University
    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Chun Fu Chang

    • International College of Semiconductor Technology, Natl Chiao-Tung University

  • H. C. Huang

    • Materials and Optoelectronic Science, Natl Sun Yat-Sen University
    • Natl Sun Yat-Sen Univ

  • Hye-Won Seo

    • Physics and Astronomy, Natl University of Jeiju
    • Physics and Astronomy, National University of Jeiju

  • Yi Liang

    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Zong Wu

    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Ting Lin

    • Physics, Natl Sun Yat-Sen University
    • Physic, Natl Sun Yat Sen Univ

  • Wei Ciou

    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Po Lin

    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Ming Chou

    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Li-Wei Tu

    • Department of Physics, National Sun Yat-sen University
    • Physics, Natl Sun Yat-Sen University
    • Natl Sun Yat-Sen Univ
    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Ikai Lo

    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Chien-Cheng Kuo

    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Shin-Ming Huang

    • National Sun Yat-sen University
    • Department of Physics, National Sun Yat-sen University
    • National Sun Yat-Sen University
    • National Sun Yat-Sen U.
    • Department of Physics, National Sun Yat-Sen University
    • Physic, Natl Sun Yat Sen Univ
    • Physics, Natl Sun Yat Sen Univ

  • Yi Lu

    • Physics, Natl Sun Yat Sen Univ
    • Physic, Natl Sun Yat Sen Univ

  • Chi Liao

    • Physics and Astronomy, ROC Military Academy
    • Physic, Natl Sun Yat Sen Univ

  • Wei-Kan Chu

    • Physics and TcSUH, University of Houston
    • University of Houston
    • Physics and Center of Superconductivity, University of Houston

  • Quark Chen

    • Physics, Natl Sun Yat-Sen University
    • Physics, Natl Sun Yat Sen Univ
    • Physics and Center of Superconductivity, University of Houston