GaSe Crystals

GaSe Crystals

GaSe (Gallium Selenide) is a layered semiconductor material with a van der Waals structure, exhibiting a direct bandgap and pronounced nonlinear optical properties. Its unique crystallographic structure facilitates mechanical exfoliation, allowing the production of high-quality monolayer or few-layer two-dimensional (2D) materials. These characteristics make GaSe a promising candidate for applications in optoelectronics, photodetectors, light-emitting devices, and frequency conversion systems. Key Features:
Layered van der Waals Structure: Enables facile exfoliation into atomically thin layers for advanced 2D materials research.
Direct Bandgap: Exhibits a bandgap of approximately 2.0 eV in bulk, with tunable optical properties in thinner films, ideal for efficient light absorption and emission.
Nonlinear Optical Properties: Demonstrates strong second-harmonic generation (SHG) and other nonlinear phenomena, making it suitable for laser frequency conversion applications.
Anisotropic Electrical and Optical Characteristics: Offers unique direction-dependent properties that are advantageous for flexible electronics and novel photonic device architectures.

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

Synthesis Method:
Chemical Vapor Transport (CVT): This method ensures the production of high-purity, stoichiometrically precise, and highly crystalline GaSe crystals.
Applications:
Nonlinear Optics & Frequency Conversion:
GaSe exhibits a large second-order nonlinear susceptibility, making it a primary material for second-harmonic generation (SHG), terahertz (THz) wave generation, and laser frequency conversion in the mid-infrared range.
Photodetectors:
The direct bandgap and high photoconductivity of GaSe enable fast-response UV and visible photodetectors with good sensitivity.
Light-Emitting Devices:
Few-layer GaSe acts as an efficient light emitter, relevant for electroluminescence studies and thin-film LED research.
2D Material Research:
Readily exfoliated into monolayers for van der Waals heterostructure assembly and layer-dependent optical property studies.
Piezoelectric Sensors:
GaSe crystals show a notable piezoelectric response, applicable in mechanical sensors and vibration energy harvesting devices.