3R-NbS2 (3R phase Niobium Disulfide)

3R NbS2 Niobium Disulfide 3R-NbS2 is a metal. Note that NbS2 also exists in the 2H-NbS2 phase which is a semiconductor and a superconductor with Tc ~6K. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. Niobium Disulfide belongs to the group-V transition metal dichalcogenides (TMDC).

The 3R phase NbS2 crystals produced at HQ Graphene have a typical lateral size of ~0.4 cm, trigonal/hexagonal shaped and have a metallic appearance.


3R-NbS2 crystal properties
Crystal size ~4 mm
Electrical properties Metal
Crystal structure hexagonal
Unit cell parameters a = b = 0.330 nm, c = 1.792 nm, α = β = 90, γ = 120°
Type Synthetic
Purity >99.995%
Characterized by XRD, Raman, EDX
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The single crystal 3R NbS2 is characterized using:

XRD: single crystal and powder X-ray diffraction (D8 Venture Bruker and D8 Advance Bruker)
EDX: Energy-dispersive X-ray spectroscopy for stoichiometric analysis
Raman: 785 nm Raman system

Raman, XRD and EDX on 3R-NbS2:

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X-ray diffraction on a single crystal 3R-NbS2 aligned along the (001) plane. XRD diffraction was performed at room temperature using a D8 Venture Bruker. 5 XRD peaks correspond, from left to right, to (00l) with l = 3, 6, 9, 12, 15

Powder X-ray diffraction (XRD) of a single crystal 3R-NbS2. X-ray diffraction was performed at room temperature using a D8 Venture Bruker.

Stoichiometric analysis of a single crystal 3R-NbS2 by Energy-dispersive X-ray spectroscopy (EDX).





HQ Graphene Wiki on:

3R NbS2 (3R phase Niobium disulfide)


1. Hunyoung Bark et al., "ias-assisted atomic force microscope nanolithography on NbS2 thin films grown by chemical vapor deposition", Journal of Physics D: Applied Physics, Volume 49, Number 48 (2016), link to article:
http://iopscience.iop.org/article/10.1088/0022-3727/49/48/484001/meta

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