Electro-optical properties of phosphorene quantum dots
Saroka, V; Lukyanchuk, I; Portnoi, M; et al.Abdelsalam, H
Date: 25 August 2017
Journal
Physical Review B: Condensed matter and materials physics
Publisher
American Physical Society
Publisher DOI
Abstract
We study the electronic and optical properties of single-layer phosphorene quantum dots with various shapes, sizes, and edge types (including disordered edges) subjected to an external electric field normal to the structure plane. Compared to graphene quantum dots, in phosphorene clusters of similar shape and size there is a set of ...
We study the electronic and optical properties of single-layer phosphorene quantum dots with various shapes, sizes, and edge types (including disordered edges) subjected to an external electric field normal to the structure plane. Compared to graphene quantum dots, in phosphorene clusters of similar shape and size there is a set of edge states with energies dispersed at around the Fermi level. These states make the majority of phosphorene quantum dots metallic and enrich the phosphorene absorption gap with low-energy absorption peaks tunable by the electric field. The presence of the edge states dispersed around the Fermi level is a characteristic feature that is independent of the edge morphology and roughness.
Physics and Astronomy
Faculty of Environment, Science and Economy
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