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- Title
Effect of TCNQ Layer Cover on Oxidation Dynamics of Black Phosphorus.
- Authors
Meingast, Laura; Koleśnik‐Gray, Maria; Siebert, Martin; Abellán, Gonzalo; Wild, Stefan; Lloret, Vicent; Mundloch, Udo; Hauke, Frank; Hirsch, Andreas; Krstić, Vojislav
- Abstract
The puckered surface of black phosphorus represents an ideal substrate for an unconventional arrangement of physisorbed species and the resulting specific two‐dimensional chemistry of this system. This opens the way to investigate the chemical and physical properties of locally confined areas of black phosphorus without the necessity for further physical downscaling of the material. We have evaporated tetracyanoquinodimethane (TCNQ) on top of black phosphorus under over‐saturation non‐equilibrium conditions in vacuum. The evolution of linear density and height of droplets formed through oxidation during exposure to air is studied time dependently by scanning‐force microscopy. Our study suggests that the TCNQ molecules spontaneously arrange in a thin layer of the order of a few nm height, which, however, is fragmented with a periodicity of about 100 nm. It is shown that within the confined space separating the layer fragments the chemical dynamics of the oxidation process is remarkably different than on a bare black phosphorus surface.
- Subjects
PHOSPHORUS; TETRACYANOQUINODIMETHANE; SCANNING force microscopy; NONEQUILIBRIUM flow; OXIDATION
- Publication
Physica Status Solidi - Rapid Research Letters, 2018, Vol 12, Issue 8, p1
- ISSN
1862-6254
- Publication type
Article
- DOI
10.1002/pssr.201800179