HfSe₂ Crystals

Description

HfSe₂ Crystals (Hafnium Diselenide)

HfSe₂ is a layered transition metal dichalcogenide (TMD) with a van der Waals structure, known for its exceptional electronic, optical, and catalytic properties. As an indirect bandgap semiconductor, HfSe₂ exhibits excellent carrier mobility, strong optical absorption, and high environmental stability, making it a promising material for applications in nanoelectronics, optoelectronics, and energy storage. Our HfSe₂ crystals are synthesized using the Chemical Vapor Transport (CVT) method, ensuring high purity, precise stoichiometry, and superior crystallinity.

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: Facilitates easy exfoliation into monolayers or few-layer nanosheets for 2D material research.
Indirect Bandgap Semiconductor: Bandgap of ~1.1 eV in bulk, tunable in few-layer forms, suitable for electronic and optoelectronic devices.
High Carrier Mobility: Ideal for field-effect transistors (FETs) and nanoelectronic applications.
Strong Optical Absorption: Excellent light absorption in the visible and near-infrared regions, suitable for photodetectors and solar cells.
Thermal and Chemical Stability: High environmental stability, ensuring long-term performance in device applications.

Crystal Structure:
Type: Hexagonal layered structure (2H phase)
Features: High crystallinity with uniform, defect-free layers, ideal for thin-film fabrication and nanoscale device applications.
Degree of Exfoliation:
Ease of Use: Easily exfoliated into monolayers or few-layer nanosheets for advanced materials research and heterostructure integration.
Other Characteristics:
High Dielectric Constant: Suitable for applications in next-generation high-κ dielectrics.
Anisotropic Transport Properties: Direction-dependent electronic and thermal conductivity, useful for advanced device architectures.
Energy Band Engineering: Tunable electronic properties through doping, strain, or layer thickness control.

Applications:
Nanoelectronics:
High-performance material for transistors, logic devices, and flexible electronics.
Optoelectronics:
Ideal for photodetectors, light-emitting diodes (LEDs), and photovoltaic devices.
Energy Storage:
Potential applications in lithium-ion batteries, supercapacitors, and hydrogen evolution reactions (HER).
2D Material Studies:
Perfect for exfoliation into monolayers and integration into van der Waals heterostructures.
Sensors:
High sensitivity for gas detection, biosensing, and chemical sensing applications.

Synthesis Method:
Chemical Vapor Transport (CVT): Ensures high-quality crystals with excellent purity, uniform thickness, and superior structural integrity.