CVD Diamond Wafer Description
CVD Diamond Wafer has outstanding physical and chemical properties. It has an almost continuous band of optical transparency from UV to THz. Diamond is one type of carbon and has the highest hardness and thermal conductivity at the same time with high wear resistance, chemical inertness, and excellent radiation resistance. CVD Diamond Wafer can be used in multiple band ranges such as X-ray, ultraviolet, infrared, microwave, and so on.
It plays an important role in high energy input, low dielectric loss, high Raman gain, low beam distortion, erosion resistance, and other aspects that can’t be replaced by general optic materials. CVD Diamond Wafers are the best thermal management material for high heat flux devices due to their excellent thermal conductivity.
CVD Diamond Wafer Specifications
Specifications & Tolerances
|
Grade
|
Optical Grade
|
Heat Sink Grade
|
Type
|
Monocrystal
|
Polycrystal
|
Wafer Size
|
Up to 15*15mm², or customized
|
2″, 3″, 4″, or customized
|
Grain Size
|
-
|
≤10μm
|
Dia. Tolerance
|
﹢0.1, -0mm
|
﹢0.1, -0mm
|
Thickness
|
0.1~2mm
|
0.1~2mm
|
Thickness Tolerance
|
±0.02mm @ ≤10mm
±0.03mm @10~15mm
|
-
|
Crystal Orientation
|
{100}
|
-
|
Surface treatment
|
Polished, Ra<2nm
|
-
|
Customization
|
Doping with different elements, surface polishing and metallization services
|
Physical Properties
|
Grade
|
Optical Grade
|
Heat Sink Grade
|
Type
|
Monocrystal
|
Polycrystal
|
Density
|
3.52g/cm³
|
3.51g/cm³
|
Raman Full Width
at Half Maximum
(FWHM)
|
~2.1 cm⁻¹
|
-
|
Nitrogen Concentration
|
<0.5 ppm
|
-
|
Thermal Conductivity
|
1900~2200 W/(m·K) @ 300K
|
1200~2000 W/(m·K) @ 300K
|
Transmittance
|
>70% @ 1064 nm
|
-
|
Refractive Index
|
2.379 @ 10.6 μm
|
-
|
Young's Modulus
|
-
|
1000~1100 GPa
|
*For detailed information, please contact us.
CVD Diamond Wafer Application
- Heat Sinks: Polycrystal CVD Diamond Wafers are used as heat sinks in high-power electronic devices like power transistors, laser diodes, and other semiconductors because of their excellent thermal conductivity. They help manage heat dissipation, preventing overheating in critical components.
- Insulating Substrates: CVD diamond wafers are used as insulating substrates for high-performance semiconductors. Their electrical insulation and high thermal conductivity make them ideal for power devices and RF (Radio Frequency) components.
- Optical Windows: Due to their optical transparency in the UV to IR range, Single Crystal CVD Diamond Wafers are used to create high-performance optical windows for lasers, infrared sensors, and other high-energy optical systems.
- Lenses and Mirrors: Diamond is used in optical components where extreme durability and high optical transmission are required, such as lenses and mirrors for high-power lasers and military applications.
- Laser Components: CVD diamond is often used for laser components that need to withstand extreme power densities without degradation, including in high-powered laser systems used in manufacturing, medicine, and research.
- Medical devices: Industrial diamonds are also used in some medical fields, such as high-precision surgical tools, dental drills, etc. Due to the high hardness and good wear resistance of diamonds, it can improve the service life and precision of medical devices.
CVD Diamond Wafer Packaging
Our CVD Diamond Wafer is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
FAQs
Q1 How do CVD Diamond Wafers perform in thermal management?
CVD diamond wafers excel in thermal management due to their superior thermal conductivity, which is much higher than most metals, including copper. This makes them ideal for use in heat sinks and thermal spreading applications in high-power electronics, laser systems, and LEDs. The ability to efficiently dissipate heat helps prevent overheating in sensitive electronic components and improves their reliability and performance.
Q2. What is the cost of CVD Diamond Wafers?
The cost of CVD diamond wafers can vary depending on factors such as:
- Size and thickness: Larger wafers or wafers with thicker diamond layers generally cost more.
- Purity and quality: Wafers with higher purity and fewer defects may be priced higher.
- Customization: Custom-made wafers with specific properties (e.g., doped for conductivity) will often incur higher costs.
Q3 Can CVD Diamond Wafers be further processed?
Yes, CVD diamond wafers can be further processed for various applications. Common processing techniques include:
- Machining: Diamond wafers can be cut, polished, and coated to meet specific application needs.
- Doping: Adding other materials to modify the electrical properties of the wafer.
- Surface treatment: Etching or polishing the surface to achieve specific finishes required for electronics or optical applications.
- Quantity: Bulk orders may result in discounted prices. To get an accurate price, it's recommended to contact suppliers with your exact requirements.
FAQs:
Q1: What are the differences between Polycrystalline CVD Diamond Wafers and single-crystal CVD Diamond Wafers?
Please Refer to the table:
Property
|
Polycrystalline CVD Diamond Wafers
|
Single-Crystal CVD Diamond Wafers
|
Structure
|
Multiple small, randomly oriented crystals
|
Single, continuous crystal structure
|
Mechanical Properties
|
Less strong, affected by grain boundaries
|
Superior hardness, strength, and wear resistance
|
Thermal Conductivity
|
Lower (due to grain boundaries)
|
Higher, excellent heat dissipation
|
Optical Properties
|
Lower clarity, can have defects
|
Superior optical clarity and precision
|
Electrical Properties
|
More isotropic, less controlled
|
Highly controllable, direction-dependent
|
Applications
|
Industrial tools, heat sinks, abrasives
|
Electronics, optics, high-performance applications
|
Q2: What is a CVD Diamond Wafer?
A CVD Diamond Wafer is a thin, flat sheet of synthetic diamond material produced through the Chemical Vapor Deposition process. This process allows for the growth of diamond on a substrate, creating high-performance wafers used in various industrial, electronic, and optical applications.
Q3: What are the applications of CVD Diamond Wafers?
CVD Diamond Wafers are used in applications requiring high thermal conductivity, hardness, and wear resistance. They are commonly used in:
- Electronics (power devices, heat sinks)
- Optics (optical windows, lenses)
- Cutting tools (due to their hardness)
- Semiconductors
- Thermal management systems
사양
Specifications & Tolerances
|
Grade
|
Optical Grade
|
Heat Sink Grade
|
Type
|
Monocrystal
|
Polycrystal
|
Wafer Size
|
Up to 15*15mm², or customized
|
2″, 3″, 4″, or customized
|
Grain Size
|
-
|
≤10μm
|
Dia. Tolerance
|
﹢0.1, -0mm
|
﹢0.1, -0mm
|
Thickness
|
0.1~2mm
|
0.1~2mm
|
Thickness Tolerance
|
±0.02mm @ ≤10mm
±0.03mm @10~15mm
|
-
|
Crystal Orientation
|
{100}
|
-
|
Surface treatment
|
Polished, Ra<2nm
|
-
|
Customization
|
Doping with different elements, surface polishing and metallization services
|
Physical Properties
|
Grade
|
Optical Grade
|
Heat Sink Grade
|
Type
|
Monocrystal
|
Polycrystal
|
Density
|
3.52g/cm³
|
3.51g/cm³
|
Raman Full Width
at Half Maximum
(FWHM)
|
~2.1 cm⁻¹
|
-
|
Nitrogen Concentration
|
<0.5 ppm
|
-
|
Thermal Conductivity
|
1900~2200 W/(m·K) @ 300K
|
1200~2000 W/(m·K) @ 300K
|
Transmittance
|
>70% @ 1064 nm
|
-
|
Refractive Index
|
2.379 @ 10.6 μm
|
-
|
Young's Modulus
|
-
|
1000~1100 GPa
|
*For detailed information, please contact us.