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Issue 19, 2018

Plasmonics with two-dimensional semiconductors: from basic research to technological applications

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Abstract

Herein, we explore the main features and the prospect of plasmonics with two-dimensional semiconductors. Plasmonic modes in each class of van der Waals semiconductors have their own peculiarities, along with potential technological capabilities. Plasmons of transition-metal dichalcogenides share features typical of graphene, due to their honeycomb structure, but with damping processes dominated by intraband rather than interband transitions, unlike graphene. Spin–orbit coupling strongly affects the plasmonic spectrum of buckled honeycomb lattices (silicene and germanene), while the anisotropic lattice of phosphorene determines different propagation of plasmons along the armchair and zigzag directions. Black phosphorus is also a suitable material for ultrafast plasmonics, for which the active plasmonic response can be initiated by photoexcitation with femtosecond pulses. We also review existing applications of plasmonics with two-dimensional materials in the fields of thermoplasmonics, biosensing, and plasma-wave Terahertz detection. Finally, we consider the capabilities of van der Waals heterostructures for innovative low-loss plasmonic devices.

Graphical abstract: Plasmonics with two-dimensional semiconductors: from basic research to technological applications

Article information


Submitted
16 Feb 2018
Accepted
30 Apr 2018
First published
02 May 2018

Nanoscale, 2018,10, 8938-8946
Article type
Minireview

Plasmonics with two-dimensional semiconductors: from basic research to technological applications

A. Agarwal, M. S. Vitiello, L. Viti, A. Cupolillo and A. Politano, Nanoscale, 2018, 10, 8938 DOI: 10.1039/C8NR01395K

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