Dresden 2020 – scientific programme

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O: Fachverband Oberflächenphysik

O 22: Poster Session - 2D Materials Beyond Graphene: Growth, Structure and Substrate Interaction

O 22.1: Poster

Monday, March 16, 2020, 18:15–20:00, P1A

Structural and electronic investigations of Blue Phosphorene on Au(111) — •Julian Picker, Maximilian Schaal, Marco Gruenewald, Felix Otto, Roman Forker, and Torsten Fritz — Institute of Solid State Physics, Friedrich Schiller University Jena, Helmholtzweg 5, 07743 Jena, Germany

In the last decades a wealth of two dimensional (2D) materials have obtained profound interest in fundamental research and practical applications because of their unique physical properties. A relatively new representative of these kind of materials is semiconducting Blue Phosphorene (BlueP), an allotrope of phosphorus. Theoretically, a buckled honeycomb structure and fascinating properties for optoelectronic applications such as a tuneable band gap size and a high carrier mobility were predicted [1,2]. In our study we observed the growth of BlueP on Au(111) by using molecular beam epitaxy (MBE) as well as the physical properties of this 2D material. The layer deposition was monitored in-situ via reflection high-energy electron diffraction (RHEED). Furthermore, we investigated the structural properties in reciprocal space by low-energy electron diffraction (LEED) and in real space by scanning tunneling microscopy with and without a hydrogen functionalised tip (STHM, STM). The electronic structure of the valence and conduction band were investigated by angle-resolved ultra violet photoelectron spectroscopy (ARUPS) and scanning tunneling spectroscopy (STS).

[1] J. L. Zhang et al.: Nano Lett. 16, 4903-4908 (2016).

[2] J. Zhuang et al.: ACS Nano 12, 5059-5065 (2018).