CAS 12067-76-4 Tungsten Ditelluride (WTe2) - 2D Materials / Alfa Chemistry

Description

Description WTe2 is a semimetal, type II Weyl semimetal (WSM). Carrier densities down to the 1E10 cm-2 range are considered the gold standard in materials. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. Tungsten ditelluride is a group VI transition metal dichalcogenide (TMDC).

Features And Benefits

Features And Benefits The WTe2 crystals we produce have typical lateral dimensions of about 0.6-0.8 cm, needle/rectangular shape and have a metallic appearance. We produce n-type WTe2 with a typical charge carrier density of about 1020cm-3 at room temperature. They also exhibit semimetal-to-superconducting transitions under hydrostatic pressure. Our WTe2 crystals feature guaranteed high purity, high crystallinity, structural anisotropy, and perfect interlayer stacking to produce large-sized monolayer sheets.

Application

Application With the distorted 1T (Td) form being thermodynamically-favoured and semi-metal in nature, WTe2 finds applications in pressure-induced superconductivity, memory storage devices, energy storage devices such as batteries, catalyst, spintronics, and thermo-electric devices.

Specifications

Synonyms	Tungsten telluride, Tungsten (IV) telluride
Molecular Weight	439.04 g/mol
Purity	(6N) 99.9999% confirmed
Bandgap	~0.7 eV
Characterization Methods	XRD, Raman, EDX, Hall measurement
Classification	Transition metal dichalcogenides (TMDCs), 2D Semiconductor materials, Charge Density Wave (CDW), type II Weyl semimetal,, Nano-electronics, Nano-photonics, Photovoltaic, Materials science
Crystal Structure And Type	Orthorhombic P
Dimension	~10 mm
Electrical Property	Semimetal, type II Weyl semimetal (WSM)
Production Method	Flux zone (no halide contamination) defect free On request: Chemical vapor transport (CVT) contains Br2, Cl2, TeCl4, and other halides
Type	Synthetic
Unit Cell Parameters	a = 0.348 nm, b = 0.625 nm, c = 1.405 nm, α = β = γ = 90°