Probing the anisotropic behaviors of black phosphorus by transmission electron microscope, angular-dependent Raman spectra and electronic transports measurements

Abstract

In this work, we correlated the angular dependence of the Raman response of black phosphorus to its crystallographic orientation by using transmission electron microscopy and Raman spectroscopy. It was found that the intensity of the A2g mode reached a maximum when the polarization direction of the incident light was parallel to the zigzag crystallographic orientation. Notably, it was further confirmed that the zigzag crystallographic direction exhibited superior conductance and carrier mobility. Because of the lattice extension along the armchair direction, an intensification of the anisotropic Raman response was observed. This work provides direct evidence of the correlation between anisotropic properties and crystallographic direction and represents a turning point in the discussion of the angular-dependent electronic properties of black phosphorus.

arXiv comment14 pages including SI. 4 figures

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Cited by in corpus (10)

• Black phosphorus: narrow gap, wide applications
• Intrinsic Charge Carrier Mobility in Single-Layer Black Phosphorus
• Titanium trisulfide (TiS3): a 2D semiconductor with quasi-1D optical and electronic properties
• Probing the anisotropic behaviors of black phosphorus by transmission electron microscope, angular-dependent Raman spectra and electronic transports measurements
• Deriving phosphorus atomic chain from few-layer black phosphorus
• Optical Properties of Anisotropic Excitons in Phosphorene
• Structure and Bonding in Amorphous Red Phosphorus
• Direct identification of monolayer rhenium diselenide by an individual diffraction pattern
• Experimentally Measured Field Effect Mobilities for Few Layer van der Waals Materials
• Straightforward Method to Orient Black Phosphorus from Bulk to Thin Layers using a Standard Green Laser