WSe₂ Crystals

WSe₂ Crystals

WSe₂ (Tungsten Diselenide) is a layered transition metal dichalcogenide (TMD) with a van der Waals structure and electronic, optical, and quantum properties. It exhibits a variable bandgap, spin-orbit coupling, and charge-carrier mobility, supporting applications in nanoelectronics, optoelectronics, spintronics, and quantum computing. WSe₂ crystals are synthesized using the Chemical Vapor Transport (CVT) method.

Sample Size Options:
Crystals larger than 10 mm²
Crystals larger than 25 mm²
Crystals larger than 100 mm²

Material Properties:
Layered van der Waals Structure: Permits exfoliation into monolayers or few-layer nanosheets for 2D material studies.
Variable Bandgap: Exhibits an indirect bandgap (~1.2 eV) in bulk and a direct bandgap (~1.65 eV) in monolayer form, applicable to optoelectronic applications.
Carrier Mobility: Applicable to high-speed transistors and nanoelectronic applications.
Photoluminescence: Monolayer WSe₂ exhibits intense photoluminescence, supporting light-emitting devices. Spin-Orbit Coupling: Permits valleytronic and spintronic applications in quantum materials research.
Environmental behavior: Maintains structural integrity under ambient conditions.

Crystal Structure:
Type: Hexagonal (2H phase) layered structure
Features: Layers applicable for thin-film fabrication and nanoscale device applications.

Degree of Exfoliation:
Ease of Use: Exfoliated into monolayers or few-layer nanosheets for materials research and heterostructure fabrication.

Other Characteristics:
Quantum Confinement Effects: Exhibits excitonic effects and light-matter interactions in monolayer form.
Anisotropic Transport Properties: Exhibits direction-dependent charge transport, applicable to electronic and thermoelectric devices.
Topological Properties: Potential applications in quantum Hall effects and topological insulator research.

Applications:
Optoelectronics:
Applicable for photodetectors, LEDs, and photovoltaic cells due to light absorption and photoluminescence. Nanoelectronics:
Used for transistors, memory devices, and flexible electronic circuits. Spintronics & Quantum Computing:
Permits research on spin-orbit coupling, valley polarization, and quantum technologies.
2D Material Studies:
Applicable for exfoliation into monolayers and assembly into van der Waals heterostructures. Sensors & Catalysis:
Used for gas detection, chemical sensing, and electrocatalytic applications such as hydrogen evolution reactions (HER). Synthesis Method:
Chemical Vapor Transport (CVT).