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Journal Article

Emergent elemental two-dimensional materials beyond graphene


Rubio,  Angel
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science Luruper Chaussee 149, 22761 Hamburg, Germany;
Nano-Bio Spectroscopy group, Universidad del Pais Vasco UPV/EHU, E-20018 San Sebastian, Spain;

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Zhang, Y., Rubio, A., & Le Lay, G. (2017). Emergent elemental two-dimensional materials beyond graphene. Journal of Physics D: Applied Physics, 50(5): 053004. doi:10.1088/1361-6463/aa4e8b.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-1C08-8
Two-dimensional (2D) materials may offer the ultimate scaling beyond the 5 nm gate length. The difficulty of reliably opening a band gap in graphene has led to the search for alternative, semiconducting 2D materials. Emerging classes of elemental 2D materials stand out for their compatibility with existing technologies and/or for their diverse, tunable electronic structures. Among this group, black phosphorene has recently shown superior semiconductor performances. Silicene and germanene feature Dirac-type band dispersions, much like graphene. Calculations show that most group IV and group V elements have one or more stable 2D allotropes, with properties potentially suitable for electronic and optoelectronic applications. Here, we review the advances in these fascinating elemental 2D materials and discuss progress and challenges in their applications in future opto- and nano-electronic devices.