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DS: Fachverband Dünne Schichten
DS 12: Poster
DS 12.15: Poster
Mittwoch, 29. März 2023, 17:00–19:00, P3
Electronic structure of MXenes determine from angle-resolved photoelectron spectroscopy — •Wei Yao1, Dongqi Li1,2, Jonas A. Krieger1, Mihir Date1, Emily C. McFarlane1, Minghao Yu1,2, Xinliang Feng1,2, and Niels B.M. Schröter1 — 1Max-Planck Institute of Microstructure Physics, Halle (Saale), 06120, Germany — 2Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, TU Dresden, Dresden, 01062, Germany
Transition metal carbides, also known as MXenes, have been one of the most fascinating two-dimensional material systems beyond graphene. Chemical substitution of the transition metal elements and terminal function groups have resulted in versatile and tunable electronic, optical and mechanical properties, with applications in energy storage, multifunctional sensors, transparent and flexible electrodes, electromagnetic interference shielding, or hydrogen evolution reaction catalysis [1]. However, to reveal the origins of the MXenes’ exceptional properties, a deeper understanding of their electronic structure is required. Here we report the first micro-focused angle-resolved photoemission spectroscopy (ARPES) measurements of single MXene flakes, which will reveal the influence of the chemical environment on the the single-particle electronic band structure, as well as many-body effects reflected in its spectral function.
[1]. A. VahidMohammadi, J. Rosen, and Y. Gogotsi. The world of two-dimensional carbides and nitrides (MXenes). Science 372, eabf1581 (2021)