Regensburg 2022 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 65: 2D Materials 2: Growth, Structure and Substrate Interaction
O 65.6: Vortrag
Donnerstag, 8. September 2022, 11:45–12:00, S052
Growth and Structural Properties of 2D Blue Phosphorene on Au(111) and on Au(100) — •Maximilian Schaal1, Julian Picker2, Felix Otto1, Marco Gruenewald1, Roman Forker1, and Torsten Fritz1 — 1Institute of Solid State Physics, Friedrich Schiller University Jena, Helmholtzweg 5, 07743 Jena, Germany — 2Institute of Physical Chemistry, Friedrich Schiller University Jena, Lessingstraße 10, 07743 Jena, Germany
Blue phosphorene (BlueP) is a novel two-dimensional material that shares properties with black phosphorene and is potentially even more interesting for optoelectronic applications because of its layer dependent band gap of approx. 2 to 3 eV and superior charge carrier mobility [1]. Despite these promising properties, the growth of quasi-freestanding BlueP is still challenging.
In our contribution we will report on the structural and electronic properties of epitaxial BlueP on Au(111) and on Au(100) by means of scanning tunneling [hydrogen] microscopy (ST[H]M), distortion-corrected low-energy electron diffraction (LEED) as well as X-ray photoelectron spectroscopy and diffraction (XPS and XPD). It is already known that on Au(111) a network consisting of BlueP islands, which are connected by Au linker atoms, is formed [2]. In contrast, we demonstrate that on Au(100) quasi-free standing BlueP domains grow [3].
[1] Z. Zhu and D. Tománek, Phys. Rev. Lett. 112, 176802 (2014).
[2] H. Tian et al., Matter 2, 111 (2020).
[3] M. Schaal, J. Phys.: Condens. Matter 33, 485002 (2021).