• diamond wafer
  • Four square-shaped, silver-colored diamond single crystal wafers/substrates arranged on a textured grey surface.
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CVD Diamond Wafers & Substrates for Power & RF Devices

CVD Diamond Wafers & Substrates for Power & RF Devices

$220.00 USD
$220.00 USD
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Multi sizes and deposited wafers are also available. Please contact us for further information.

Lab-grown single-crystal diamond wafers are ultra-high-performance substrates produced by Chemical Vapor Deposition (CVD), offering unmatched thermal conductivity, hardness, optical transparency, and crystal purity. Unlike polycrystalline diamond, single-crystal diamond provides a uniform lattice structure with minimal grain boundaries, making it ideal for advanced electronics, photonics, quantum devices, and precision optics.

Our diamond wafers are carefully grown, cut, and polished to deliver research-grade surface quality and controlled crystallographic orientation. They are widely used as heat spreaders for high-power devices, substrates for GaN/AlN/diamond electronics, quantum NV-center platforms, and optical or X-ray components requiring extreme durability.

Key Features

  • True single-crystal CVD diamond
  • Exceptional thermal conductivity (up to ~2000 W/m·K)
  • Ultra-low impurity & defect density
  • Atomically smooth polished surface
  • Controlled crystal orientation: {100}, {110}, or custom
  • Custom cutting, thickness, and polishing available

Typical Specifications

  • Material: Single-crystal CVD diamond
  • Form: Wafer / plate / substrate
  • Orientation: {100} (standard), others on request
  • Thickness: 0.1 – 0.6 mm (custom available)
  • Surface Finish: Optical polish (Ra < 30–50 nm typical) Ra ~1nm available for request
  • Size: mm-scale to cm-scale (custom sizes supported)

Applications

  • High-power semiconductor heat spreaders
  • Diamond-based electronics & RF devices
  • Quantum computing (NV centers)
  • MEMS / NEMS fabrication
  • X-ray, laser, and infrared optics
  • Extreme-environment research

Frequently Asked Questions — Single-Crystal Diamond Wafer

What is a lab-grown single-crystal diamond wafer?
A lab-grown single-crystal diamond wafer is a true diamond substrate produced by chemical vapor deposition (CVD). It has a continuous crystal lattice with no grain boundaries, offering superior thermal, optical, and electronic properties compared to polycrystalline diamond.
How does single-crystal diamond differ from polycrystalline diamond?
Single-crystal diamond provides uniform crystal orientation, higher thermal conductivity, lower defect density, and better optical clarity. Polycrystalline diamond contains grain boundaries that reduce performance in advanced electronic and photonic applications.
What crystal orientations are available?
Standard orientation is {100}. Other orientations such as {110} or custom crystallographic cuts are available upon request.
What surface finish and thickness can you provide?
Typical thickness ranges from 0.1 to 0.6 mm. Optical-grade polishing with surface roughness Ra < 30–50 nm is standard. Thinner or thicker substrates and double-side polishing are available upon request.
What are common applications of diamond wafers?
High-power semiconductor heat spreaders, GaN/AlN-on-diamond electronics, RF devices, quantum NV-center platforms, MEMS/NEMS fabrication, and optical or X-ray components for extreme environments.
Are these wafers suitable for semiconductor processing?
Yes. Single-crystal diamond wafers are widely used in research and pilot semiconductor processing, including lithography, etching, metallization, and bonding for advanced electronic and quantum devices.
Do you offer custom sizes, shapes, or edge processing?
Yes. Custom wafer sizes, plates, diced pieces, chamfered edges, thickness control, and special polishing requirements can be provided based on your application.
Are these wafers suitable for research and OEM use?
Absolutely. Our diamond wafers are supplied to universities, national laboratories, and industrial R&D teams for both research-grade and pre-production applications.

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