NbSe2 (2H Niobium Diselenide)

2H NbSe2 Niobium Diselenide 2H-NbSe2 is 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.

2H NbSe2 crystal properties
Crystal size ~8 mm
Electrical properties 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
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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

X-ray diffraction on a 2H phase NbSe2 single crystal aligned along the (001) plane. XRD was performed at room temperature using a D8 Venture Bruker. The 4 XRD peaks correspond, from left to right, to (00l) with l = 2, 4, 6, 8

Powder X-ray diffraction (XRD) of a single crystal 2H NbSe2. X-ray diffraction was performed at room temperature using a D8 Venture Bruker.

Stoichiometric analysis of a single crystal 2H NbSe2 by Energy-dispersive X-ray spectroscopy (EDX).

Raman spectrum of a single crystal 2H NbSe2. Measurement was performed with a 785 nm Raman system at room temperature.

HQ Graphene Wiki on:

2H NbSe2 (Niobium Diselenide)

1. Qu, R., et al. "Ultrasonic-assisted top-down preparation of NbSe2 micro/nanoparticles and hybrid material as solid lubricant for sliding electrical contact." Ultrasonics sonochemistry 73 (2021): 105491.

2. Hamill, A., et al. "Two-fold symmetric superconductivity in few-layer NbSe2." Nature Physics 17.8 (2021): 949-954.

3. Ingla-Aynйs, J., et al. "Omnidirectional spin-to-charge conversion in graphene/NbSe2 van der Waals heterostructures." 2D Materials 9.4 (2022): 045001.

4. Bauriedl, L., et al. "Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe2." Nature communications 13.1 (2022): 4266.


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