NbSe2 (2H Niobium Diselenide)
2H-NbSe2 is a metal, a superconductor with Tc ~7.2K and a Charge Density Waves (CDW) system with Tcdw of ~33K. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. 2H NbSe2 belongs to the group-V transition metal dichalcogenides (TMDC).
To buy NbSe2 crystals please click here.
The 2H phase Niobium Diselenide crystals produced at HQ Graphene have a typical lateral size of ~0.6-0.8 cm, hexagonal shaped and have a metallic appearance.
A selection of peer review publications on the NbSe2 we sell can be found below.
| Crystal size | ~10 mm |
| Electrical properties | Metal, Superconductor (Tc~7.2K), Charge Density Waves (CDW) system, Tcdw ~33K |
| Crystal structure | hexagonal |
| Unit cell parameters | a = b = 0.344 nm, c = 1.255 nm, α = β = 90°, γ = 120° |
| Monolayer properties |  Link to C2DB containing calculated properties |
| Type | Synthetic |
| Purity | >99.995 % |
| Characterized by | XRD, Raman, EDX |
| More information? | Please contact us by email or phone |
The single crystal 2H NbSe2 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 2H NbSe2:
Click on an image to zoom
HQ Graphene Wiki on:
2H NbSe2 (Niobium Diselenide)
1. Naoto Yabuki et al., "Supercurrent in van der Waals Josephson junction",Nature Communications 7, 10616 (2016), link to article:
http://www.nature.com/ncomms/2016/160202/ncomms10616/full/ncomms10616.html?WT.ec_id=NCOMMS-20160205
2. Y. Cao et al., "Quality Heterostructures from Two-Dimensional Crystals Unstable in Air by Their Assembly in Inert Atmosphere", Nano Lett. 15 (8), 4914-4921 (2015), link to article:
http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.5b00648