Wafer Substrates
Vital Materials supplies high-quality epitaxial substrates engineered for reliable performance across optoelectronic, RF, and power-device applications. Using precision wire-sawing, grinding, CMP polishing, and advanced cleaning technologies, we deliver EPI-ready wafers that meet the strict requirements of modern semiconductor manufacturing.
Gallium Arsenide (GaAs) Substrates
Gallium arsenide (GaAs) is a high-performance III–V semiconductor known for its direct bandgap, high electron mobility, and excellent high-frequency characteristics.
Available Sizes
- 2″, 3″, 4″, 6″, and 8″
Growth Method
- VGF
Types Offered
- Semi-insulating GaAs (undoped)
- Semiconducting GaAs (Si- or Zn-doped)
Applications
- LED and display technologies, including Mini- and Micro-LEDs
- RF devices used in wireless communication systems (4G/5G base stations, satellite links, Wi-Fi modules)
- High-efficiency solar cells used in aerospace, drones, and specialty vehicles
Indium Phosphide (InP) Substrates
Indium phosphide (InP) is valued for its high electron mobility, wide bandgap, and strong radiation resistance.
Available Sizes
- 2″, 3″, 4″, and 6″
Growth Method
- VGF
Types Offered
- Semi-insulating InP (Fe-doped)
- Semiconducting InP (Si- or Zn-doped)
- Low-dislocation InP for demanding optoelectronic applications
Applications
- High-speed optoelectronic devices such as lasers, photodiodes, modulators, and optical amplifiers
- RF electronics including terahertz components and frequency multipliers
- High-efficiency InP solar cells for low-light and radiation-intense environments
Germanium (Ge) Substrates
Germanium substrates provide excellent carrier mobility, making them essential for high-performance semiconductor and photovoltaic applications.
Available Sizes
- 2″, 3″, 4″, 6″, and 8″
Dislocation Options
- Low-dislocation and zero-dislocation
Resistivity Range
- 0.005–50 Ω·cm
Applications
- CPV (concentrated photovoltaic) systems
- Space-grade solar panels with extended operational life
- Ultra-high-brightness LEDs and specialty semiconductor devices
Sapphire (Al₂O₃) Substrates
Vital Materials produces high-quality sapphire substrates using advanced manufacturing technology originally derived from Honeywell substrate processing. We supply large-diameter sapphire wafers with excellent surface flatness and uniformity.
Available Sizes
- 2″, 4″, 6″, and 8″
Applications
- LED manufacturing
- RFICs and power electronics
- Optical and sensing applications requiring high thermal conductivity and durability