WTe2 (Tungsten Ditelluride)
WTe2 is a semimetal and a type II Weyl semimetal (WSM). The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. Tungsten Ditelluride belongs to the group-VI transition metal dichalcogenides (TMDC).
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The WTe2 crystals produced at HQ Graphene have a typical lateral size of ~0.6-0.8 cm, needle/rechtangular shaped and have a metallic appearance.
We produce n-type WTe2, having a typical charge carrier density of ~1020cm-3 at room temperature.
A selection of peer review publications on the WTe2 we sell can be found below.
| Crystal size | ~10 mm |
| Electrical properties | Semimetal, type II Weyl semimetal (WSM) |
| Crystal structure | Orthorhombic P |
| Unit cell parameters | a = 0.348 nm, b = 0.625 nm, c = 1.405 nm, α = β = γ = 90° |
| Monolayer properties |  Link to C2DB containing calculated properties |
| Type | Synthetic |
| Purity | >99.995 % |
| Characterized by | XRD, Raman, EDX, Hall measurement |
| More information? | Please contact us by email or phone |
The single crystal WTe2 is characterized using:
XRD: single crystal and powder X-ray diffraction (D8 Venture Bruker and D8 Advance Bruker)EDX: Stoichiometric analysis
Raman: 785nm Raman system
Hall measurement: Extraction of charge carrier density and doping in the Van der Pauw geometry.
Raman, XRD and EDX on WTe2:
Click on an image to zoom
HQ Graphene Wiki on:
WTe2 (Tungsten Ditelluride)
1. Zhao, B., et al. "Unconventional charge-spin conversion in Weyl‐semimetal WTe2." Advanced Materials 32.38 (2020): 2000818.
2. Hou, F., et al. "Oxidation kinetics of WTe2 surfaces in different environments." ACS Applied Electronic Materials 2.7 (2020): 2196-2202.
3. Zhao, B., et al. "Observation of charge to spin conversion in Weyl semimetal WTe 2 at room temperature." Physical Review Research 2.1 (2020): 013286.
4. Wang, C., et al. "Van der Waals thin films of WTe2 for natural hyperbolic plasmonic surfaces." Nature communications 11.1 (2020): 1158.