Topological Insulator Nanoribbon Synthesis by Metal-Organic Chemical Vapor Deposition

ORAL

Abstract

We report a method for metal-organic chemical vapor deposition (MOCVD) synthesis of Bi$_2$Se$_3$ topological insulator nanoribbons. We use gold nanoparticles to catalyze nanoribbon growth on silicon substrates. Trimethyl Bismuth and Diethyl Selenium are used as the metal-organic precursors. The growth parameters can be varied to control the morphology from narrow nanoribbons to wide platelets. Resulting nanostructures are characterized by electron diffraction, energy dispersive X-ray spectroscopy, and low-temperature transport measurements. We also investigate the synthesis of ternary compounds using this growth method.

*Funded by the Sloan and Packard Foundations, and the NSF supported Princeton Center for Complex Materials.

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Authors

  • Loren Alegria

    • Princeton University

  • M.D. Schroer

    • Princeton University
    • Princeton Univerisity

  • Gerald Poirier

    • Princeton University
    • Princeton Institute for the Science and Technology of Materials, Princeton University

  • Michael Pretko

    • Princeton University

  • Anasua Chatterjee

    • Princeton University

  • Shivang Patel

    • None

  • Jason Petta

    • Princeton University
    • Princeton Univerisity