Tantalum Diselenide (2H TaSe2)

Tantalum Diselenide (2H TaSe2)

Catalog Number: ACM12039553-2

CAS Number: 12039-55-3

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Description

Description 2H-TaSe2 is a metal that is a disproportionate charge density wave (CDW) system at ~120K, a commensurate CDW at ~90K and a Tc ~0.1K superconductor. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. Tantalum diselenide is a group V transition metal dichalcogenide (TMDC).

Features And Benefits

Features And Benefits The 2H-phase TaSe2 crystals produced at HQ Graphene have typical lateral dimensions of about 0.6-0.8 cm, are hexagonal and have a metallic appearance.

Application

Application Tantalum Diselenide (TaSe2) devices with nanometer-scale thicknesses strongly exhibit non-linear current-voltage characteristics, unusual optical response, and electrical gating at room temperature. In principle, such current-voltage characteristics can be used for implementing radiation-hard, all-metallic logic circuits.

Specifications

Synonyms	Tantalum (IV) selenide, Bis(selanylidene)tantalum
Molecular Weight	338.87 g/mol
Melting Point	> 1.300 °C
Purity	>99.995%
Appearance	Dark brown
Characterization Methods	XRD, Raman, EDX
Classification	Transition metal dichalcogenides (TMDCs), 2D charge density wave (CDW) materials, Nano-electronics, Nano-photonics, Superconductivity, Photovoltaic, Materials science
Crystal Structure And Type	Hexagonal
Dimension	~10 mm
Electrical Property	Metal, Charge density waves (CDW) system at ~120K, Superconductor (Tc ~0.1K)
Production Method	Flux zone (guaranteed CDW response) On request: Chemical vapor transport (CVT) contains Br2, Cl2, TeCl4, and other halides
Type	Synthetic
Unit Cell Parameters	a = b = 0.342 nm, c = 1.255 nm, α = β = 90° , γ = 120°

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