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CVD diamond for thermal management

CVD materials

CVD diamond for thermal management

Item Number : cvdm-02

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Introduction

CVD diamond is a crystalline diamond grown by chemical vapor deposition (CVD) method. It is a promising application of diamond as a heat spreader material for various applications. CVD diamond provides the highest thermal conductivity of any material, which is approximately 2000 W/mK, which is five times higher than that of copper at room temperature. It is used in a variety of applications including ultra-wide band gap semiconductors, optical components, thermal spreaders, and wear-resistant coatings.

CVD diamond for thermal management
CVD diamond for thermal management

Applications

CVD diamond's exceptional thermal conductivity makes it a highly sought-after material for various applications, including:

  • High-power integrated circuits (ICs): CVD diamond serves as a heat spreader, effectively dissipating heat away from the ICs, preventing overheating and ensuring optimal performance.

  • Laser diodes: CVD diamond's high thermal conductivity enables efficient heat dissipation from laser diodes, improving their performance and reliability.

  • GaN on Diamond (GOD): CVD diamond substrates are employed for the growth of GaN layers, resulting in improved thermal management and enhanced device performance in high-power electronics and optoelectronics.

  • Heat spreaders for satellite-based electronic systems: CVD diamond's exceptional thermal conductivity makes it an ideal material for heat spreaders in satellite-based electronic systems, ensuring efficient heat dissipation and preventing overheating in harsh environments.

  • Ultra-wide band gap semiconductors: CVD diamond finds application in ultra-wide band gap semiconductors due to its high thermal conductivity, enabling efficient heat dissipation and improved device performance.

  • Optical components: CVD diamond is utilized in optical components, such as windows and lenses, owing to its high thermal conductivity, which minimizes thermal distortion and ensures optimal optical performance.

  • Thermal spreaders: CVD diamond's high thermal conductivity makes it an effective thermal spreader in various electronic devices, efficiently dissipating heat and preventing overheating.

  • Wear-resistant coatings: CVD diamond's extreme mechanical strength and high thermal conductivity make it suitable for wear-resistant coatings in demanding applications, such as cutting tools and aerospace components.

Features

  • Exceptional Thermal Conductivity: CVD diamond exhibits outstanding thermal conductivity, which is five times higher than that of copper. This exceptional property makes it suitable for applications requiring efficient heat dissipation.

  • Tailorable Thermal Conductivity: Our CVD diamond offers customizable thermal conductivity within the range of 800-2000 W/mK. This flexibility allows us to cater to the specific requirements of various applications.

  • Diverse Applications: CVD diamond finds applications in high-power integrated circuits, laser diodes, GaN on Diamond (GOD), and heat spreaders for satellite-based electronic systems. Its versatility makes it a valuable material across different industries.

  • High-Quality Grades: We offer various quality grades of CVD diamond to meet the diverse needs of our customers. These grades are categorized based on their thermal conductivity levels, ranging from Standard Medium to Excellent.

  • Precise Specifications: Our CVD diamond is manufactured with strict adherence to specifications, ensuring consistent quality and performance. Key specifications include thermal conductivity levels, thickness tolerance, flatness, density, Young's modulus, and surface finishes.

  • Customizable Sizes: We provide CVD diamond in a range of standard sizes, including double-sided polished options with a diameter of up to 150 mm. We also offer tailored sizes to accommodate specific project requirements.

Principle

CVD diamond offers exceptional thermal conductivity, up to 2000 W/mK, due to lattice vibrations as the primary heat conduction mechanism. This remarkable property makes it an ideal choice for various applications requiring efficient heat dissipation, such as high-power integrated circuits, laser diodes, and heat spreaders.

Advantages

  • Unparalleled thermal conductivity: With a thermal conductivity five times higher than that of copper, CVD diamond is the ideal material for thermal management applications requiring optimum performance.
  • Easily obtained high thermal conductivity: Due to the extraordinary high concentration of atomic hydrogen produced by the very high temperatures of the arc discharging, diamond films with high thermal conductivity can be easily obtained even at relatively high growth rate by DC Arc Plasma Jet.
  • Tailorable thermal conductivity: The thermal conductivity of CVD diamond can be tailor ed within the range of 800-2000 W/mK, allowing it to be subdivided into different quality grades to meet the different needs of customers in different application fields.
  • Wide range of applications: CVD diamond is used as mounts for high-power integrated circuits, laser diodes, GaN on Diamond (GOD), and heat spreaders for satellite-based electronic systems.
  • Excellent thermal properties: With the highest known thermal conductivity, CVD diamond is the ideal material for thermal management applications requiring optimum performance.
  • Invaluable in electronic and electrical applications: Considering 50 percent of electronic failures occur due to heat-related issues, CVD diamond is invaluable in all types of electronic and electrical applications, including telecommunications and microelectronic devices, where the build-up of heat can destroy delicate circuitry or severely impair performance.
  • Key to enabling smaller, more powerful electronic devices: Properly dissipating heat is also key to enabling smaller, more powerful electronic devices.

Specifications

Thermal Grade: /
Thermal conductivity level: /
Standard Medium: >1200W/m.k
High: >1500W/m.k
Excellent: >1800W/m.k (up to 2000W/m.k)
Tolerance of Thickness:  ±25um
Flatness: <4um/cm
Density: 3.5g/cm³
Young's modulus: 1000-1100GPa
Growth side surface finish: <100 nm Ra
Nucleation side surface finish: <30 nm Ra
Standard Sizes
Double sides polished :  Up to diameter 150 mm
As grown thickness:  Between 0.3 mm and 1.5 mm
Polished thickness:  Between 0.2 mm and 1.0 mm

FAQ

What is CVD (Chemical Vapor Deposition) and what are its key advantages?

CVD, or Chemical Vapor Deposition, is a process where materials are deposited onto a substrate from the vapor phase. Key advantages include the ability to coat restricted access surfaces, a wide range of coating materials (metals, alloys, and ceramics), very low porosity levels, high purity, and economical production with large batch numbers.

What is CVD furnace?

Chemical vapor deposition (CVD) is a technology that uses various energy sources such as heating, plasma excitation or light radiation to chemically react gaseous or vapor chemical substances on the gas phase or gas-solid interface to form solid deposits in the reactor by means of chemical reaction.To put it simply, two or more gaseous raw materials are introduced into a reaction chamber, and then they react with each other to form a new material and deposit it on the substrate surface.

CVD furnace is one combined furnace system with high temperature tube furnace unit,gases control unit, and vacuum unit, it is widely used for experiment and production of composite material preparation, microelectronics process, semiconductor optoelectronic, solar energy utilization, optical fiber communication, superconductor technology, protective coating field.

What is the thermal conductivity of CVD diamond?

The thermal conductivity of CVD diamond is typically in the range of 800-2000 W/mK, which is four times higher than that of copper.

What are some common applications of CVD materials?

CVD materials are used in various applications such as cutting tools, loudspeakers, dressing tools, wire drawing dies, thermal management, electronics, optics, sensing, quantum technologies, and more. They are valued for their superior thermal conductivity, durability, and performance in different environments.

What is CVD diamond machine?

A CVD diamond machine is a device used to produce synthetic diamonds through a process called Chemical Vapor Deposition (CVD). This process involves the precipitation of chemical vapors to create a diamond, which has properties that are equivalent to natural diamonds. CVD diamond machines including filament-assisted thermal CVD, plasma-enhanced CVD, and combustion-flame assisted CVD etc. The resulting CVD diamonds are useful in the cutting tools industry due to their high hardness and long-lasting tool life, making them an important and cost-effective tool for cutting non-ferrous materials.

How does CVD furnace work?

CVD furnace system consists of high temperature tube furnace unit, reacting gas source precise control unit, vacuum pump station and corresponding assembling parts.

Vacuum pump is to remove the air from the reacting tube,and make sure there is no unwanted gases inside the reaction tube, after that the tube furnace will heat the reaction tube to a target temperature, then reacting gas source precise control unit can introduce different gases with a set ratio into the furnace tube for the chemical reaction, the chemical vapor deposition will be formed in the CVD furnace.

What types of diamond growth machines are available?

Several machines are available for growing artificial diamonds, including hot filament CVD, DC current plasma flame CVD, microwave plasma-enhanced chemical vapor deposition (MPCVD), and micro plasma CVD (MPCVD). Among these, MPCVD is widely used due to its homogeneous heating by microwave. Additionally, the growth rate of diamond can be increased by increasing plasma density, and nitrogen can be added to improve diamond growth rate. To achieve a flat surface, various polishing techniques, including mechanical and chemo-mechanical polishing, can be used. Large size diamond growth can be achieved through mosaic growth or heteroepitaxial growth.

What is the basic principle of CVD?

The basic principle of Chemical Vapor Deposition (CVD) is to expose a substrate to one or more volatile precursors that react or decompose on its surface to produce a thin film deposit. This process can be used for various applications, such as patterning films, insulation materials, and conducting metal layers. CVD is a versatile process that can synthesize coatings, powders, fibers, nanotubes, and monolithic components. It is also capable of producing most of the metal and metal alloys and their compounds, semiconductors, and nonmetal systems. The deposition of a solid on a heated surface from a chemical reaction in the vapor phase characterizes the CVD process.

What is Mpcvd?

MPCVD stands for Microwave Plasma Chemical Vapor Deposition and it is a process of depositing thin films onto a surface. It uses a vacuum chamber, microwave generator, and gas delivery system to create a plasma made up of reacting chemicals and necessary catalysts. MPCVD is heavily used in the ANFF network to deposit layers of diamond using methane and hydrogen to grow new diamond on a diamond-seeded substrate. It is a promising technology for producing low-cost, high-quality large diamonds and is extensively used in the semiconductor and diamond cutting industry.

How can CVD diamond be used for thermal management?

CVD diamond can be used for thermal management in a variety of ways, including: * As a heat sink * As a substrate for electronic devices * As a coating for metal surfaces

What types of CVD materials are available?

There are several types of CVD materials available, including CVD Diamond coatings, CVD diamond domes, CVD Diamond for dressing tools, CVD Diamond wire drawing die blanks, CVD Diamond cutting tool blanks, CVD boron-doped diamond, CVD diamond for thermal management, and more. Each type is tailored for specific applications.

How does a CVD diamond machine work?

CVD diamond machines work by introducing a mixture of gases, typically methane and hydrogen, into a vacuum chamber. The gases are then activated using a variety of techniques such as microwave plasma or hot filament, which breaks down the molecules and releases carbon atoms. These carbon atoms then settle on the substrate, building up layer by layer to form a synthetic diamond.

Which gas is used in CVD process?

There are tremendous gas sources can be used in the CVD process, the common chemical reactions of CVD includes Pyrolysis, photolysis, reduction, oxidation, redox,so the gases involved in these chemical reactions can be used in the CVD process.

We take CVD Graphene growth for an example, the gases used in the CVD process will be CH4,H2,O2 and N2.

What are the advantages of lab grown diamonds?

The advantages of lab grown diamonds include knowing their origin, lower price point, being more environmentally friendly, and the ability to create colored diamonds more easily. Lab grown diamonds are almost 100% certain of their origin, making them free from conflict, child exploitation, or war. They are also at least 20% cheaper than natural diamonds of the same size, clarity, and cut. Lab grown diamonds are more sustainable as there is no mining involved and they require less environmental impact. Lastly, synthetic colored diamonds are easier to manufacture in a wide range of colors and come at a significantly cheaper price point.

What are the different types of CVD method?

The different types of CVD methods include atmospheric pressure CVD (APCVD), low-pressure CVD (LPCVD), ultrahigh vacuum CVD, CVD supported by aerosols, direct liquid injection CVD, hot wall CVD, cold wall CVD, microwave plasma CVD, plasma-enhanced CVD (PECVD), remote plasma-enhanced CVD, low-energy plasma-enhanced CVD, atomic layer CVD, combustion CVD, and hot filament CVD. These methods differ in the mechanism by which chemical reactions are triggered and the operating conditions.

What is Mpcvd machine?

The MPCVD (Microwave Plasma Chemical Vapor Deposition) machine is a laboratory equipment used to grow high-quality diamond films. It uses a carbon-containing gas and a microwave plasma to create a plasma ball above the diamond substrate, which heats it to a specific temperature. The plasma ball doesn't contact the cavity wall, making the diamond growth process free from impurities and enhancing the diamond's quality. The MPCVD system consists of a vacuum chamber, a microwave generator, and a gas delivery system that controls the flow of gas into the chamber.

What are the benefits of using CVD diamond for thermal management?

he benefits of using CVD diamond for thermal management include: * Improved heat dissipation * Reduced energy consumption * Increased reliability * Smaller and lighter devices

How does CVD diamond enhance the performance of cutting tools?

CVD diamond enhances cutting tools by providing superior wear resistance, low friction, and high thermal conductivity. This makes them ideal for machining non-ferrous materials, ceramics, and composites, ensuring longer tool life and better performance.

What are the advantages of using CVD diamond machines?

CVD diamond machines offer several advantages over other methods of diamond production. Firstly, they allow for the creation of high-quality, near-flawless diamonds with precise control over their shape, size, and clarity. These machines also enable the production of diamonds with specific properties, such as color or electrical conductivity, by introducing appropriate dopant gases during the deposition process. Additionally, CVD diamond machines are more environmentally friendly compared to traditional diamond mining, as they minimize the social and environmental impacts associated with diamond extraction.

What is the advantage of CVD system?

  • Wide range of films can be produced, metal film, nonmetal film and multi-component alloy film as required. At the same time, it can prepare high-quality crystals that are difficult to obtain by other methods, such as GaN, BP, etc.
  • The film forming speed is fast, usually several microns per minute or even hundreds of microns per minute. It is possible to simultaneously deposit large quantities of coatings with uniform composition, which is incomparable to other film preparation methods, such as liquid phase epitaxy (LPE) and molecular beam epitaxy (MBE).
  • The working conditions are carried out under normal pressure or low vacuum conditions, so the coating has good diffraction, and the workpieces with complex shapes can be uniformly coated, which is much superior to PVD.
  • Due to the mutual diffusion of reaction gas, reaction product and substrate, a coating with good adhesion strength can be obtained, which is crucial for preparing surface strengthened films such as wear-resistant and anti-corrosion films.
  • Some films grow at a temperature far lower than the melting point of the film material. Under the condition of low temperature growth, the reaction gas and reactor wall and impurities contained in them almost do not react, so a film with high purity and good crystallinity can be obtained.
  • Chemical vapor deposition can obtain a smooth deposition surface. This is because compared with LPE, chemical vapor deposition (CVD) is carried out under high saturation, with high nucleation rate, high nucleation density, and uniform distribution on the whole plane, resulting in a macroscopic smooth surface. At the same time, in chemical vapor deposition, the average free path of molecules (atoms) is much larger than LPE, so the spatial distribution of molecules is more uniform, which is conducive to the formation of a smooth deposition surface.
  • Low radiation damage, which is a necessary condition for manufacturing metal oxide semiconductors (MOS) and other devices

What is the price of CVD growing machine?

The price of a CVD growing machine can vary widely depending on the size and complexity of the unit. Small tabletop models designed for research and development purposes may cost around $50,000, while industrial-scale machines capable of producing large quantities of high-quality diamonds can cost upwards of $200,000. However, the price of CVD diamonds is generally lower than mined diamonds, making them a more affordable option for consumers.

What are the advantages of using chemical vapor deposition machines?

Chemical vapor deposition machines offer several advantages in thin film deposition. They allow for precise control over the film's properties, such as thickness, composition, and uniformity. CVD can deposit films over large areas and complex shapes, making it suitable for a wide range of applications. The technique enables the deposition of a variety of materials, including metals, semiconductors, ceramics, and organic compounds. CVD films can exhibit excellent adhesion, purity, and conformality to the substrate surface. Additionally, CVD machines can operate at relatively low temperatures, reducing thermal stress on the substrate and enabling deposition on temperature-sensitive materials.

What are the advantages of Mpcvd?

MPCVD has several advantages over other methods of diamond production, such as higher purity, less energy consumption, and the ability to produce larger diamonds.

What makes CVD diamond domes suitable for high-performance loudspeakers?

CVD diamond domes are suitable for high-performance loudspeakers due to their exceptional sound quality, durability, and power handling capabilities. Made with DC Arc Plasma Jet technology, they deliver superior acoustic performance for high-end audio applications.

What considerations should be made when selecting a CVD diamond machine?

When selecting a CVD diamond machine, several factors should be considered. Firstly, the size and capacity of the machine should align with the intended production requirements. The deposition chamber size should accommodate the desired substrate dimensions and allow for scalability. The control and automation capabilities of the machine should also be assessed to ensure ease of operation and reproducibility. Additionally, the machine's heating and activation methods should be evaluated for efficiency and uniformity of diamond growth. It is also important to consider the availability of technical support, maintenance services, and the overall cost of ownership. Consulting with manufacturers and experts in the field can help in selecting the most suitable CVD diamond machine for specific production needs.

What does PECVD stand for?

PECVD is a technology that uses plasma to activate reaction gas, promote chemical reaction on the surface of substrate or near surface space, and generate solid film. The basic principle of plasma chemical vapor deposition technology is that under the action of RF or DC electric field, the source gas is ionized to form a plasma, the low-temperature plasma is used as the energy source, an appropriate amount of reaction gas is introduced, and the plasma discharge is used to activate the reaction gas and realize chemical vapor deposition.

According to the method of generating plasma, it can be divided into RF plasma, DC plasma and microwave plasma CVD, etc...

What are the applications of chemical vapor deposition machines?

Chemical vapor deposition machines find applications in various industries and research fields. In the semiconductor industry, CVD is used to deposit thin films for integrated circuits, such as silicon dioxide and silicon nitride. CVD is also employed in the production of thin film solar cells, where materials like cadmium telluride or copper indium gallium selenide are deposited. Other applications include the deposition of protective coatings, such as diamond-like carbon films, wear-resistant coatings, and anti-reflective coatings. CVD is also utilized in the production of optical coatings, such as thin films for mirrors, filters, and waveguides.

Are CVD diamonds real or fake?

CVD diamonds are real diamonds and not fake. They are grown in a laboratory through a process called Chemical Vapor Deposition (CVD). Unlike natural diamonds that are mined from under the earth's surface, CVD diamonds are created using advanced technology in labs. These diamonds are 100% carbon and are the purest form of diamonds known as Type IIa diamonds. They have the same optical, thermal, physical, and chemical properties as natural diamonds. The only difference is that CVD diamonds are created in a lab and not mined from the earth.

How does CVD diamond improve thermal management in electronic devices?

CVD diamond improves thermal management in electronic devices by offering high-quality diamond with thermal conductivity up to 2000 W/mK. This makes it ideal for use in heat spreaders, laser diodes, and GaN on Diamond (GOD) applications, effectively dissipating heat and enhancing device performance.

What are the common applications of diamonds produced by CVD diamond machines?

Diamonds produced by CVD diamond machines have a wide range of applications. They are commonly used in jewelry, as they offer the same beauty and durability as natural diamonds. CVD diamonds are also highly valued in industrial applications, such as cutting tools, abrasives, and heat sinks, due to their exceptional hardness and thermal conductivity. They are used in the electronics industry for high-performance electronic devices, such as high-power transistors and radiation detectors. CVD diamonds are also finding applications in the medical field, including surgical tools, optical components, and as coatings for implants due to their biocompatibility.

What is the difference between CVD and PECVD?

The difference between PECVD and traditional CVD technology is that the plasma contains a large number of high-energy electrons, which can provide the activation energy required in the chemical vapor deposition process, thus changing the energy supply mode of the reaction system. Since the electron temperature in the plasma is as high as 10000K, the collision between electrons and gas molecules can promote the chemical bond breaking and recombination of the reaction gas molecules to generate more active chemical groups, while the whole reaction system maintains a lower temperature.

So compared to the CVD process, PECVD can carry out the same chemical vapor deposition process with a lower temperature.

What factors should be considered when selecting a chemical vapor deposition machine?

Several factors should be considered when selecting a chemical vapor deposition machine. The required film properties, such as composition, thickness, and uniformity, should align with the capabilities of the machine. The size of the deposition chamber should accommodate the desired substrate size and shape. The machine's temperature and pressure range should match the specific deposition requirements. It is also important to consider the availability and compatibility of precursor gases for the desired material deposition. Other considerations include the ease of operation, maintenance requirements, and the level of automation or control capabilities. Additionally, consulting with experts or manufacturers can provide valuable guidance in selecting the most suitable CVD machine for a specific application.

Can chemical vapor deposition machines be used for multi-layered thin film deposition?

Yes, chemical vapor deposition machines can be used for multi-layered thin film deposition. By controlling the deposition parameters and sequentially introducing different precursor gases, it is possible to deposit multiple layers of different materials onto a substrate. This enables the creation of complex thin film structures with tailored properties and functionalities. The deposition sequence, temperature, pressure, and gas flow rates for each layer can be precisely controlled to achieve the desired film composition and thickness. Multi-layered thin films find applications in various fields, such as microelectronics, optoelectronics, and surface engineering, where different layers serve specific functions or enhance the overall performance of the material system.
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4.8

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5

I am very satisfied with the CVD diamond for thermal management. It has greatly improved the performance of my electronic devices.

Léa Marceau

4.9

out of

5

The CVD diamond is of excellent quality and has met all my expectations. I highly recommend this product.

Alessandra Bernardes

4.7

out of

5

I am very impressed with the thermal conductivity of the CVD diamond. It is a great material for heat dissipation.

Imogen Hill

4.8

out of

5

The CVD diamond is very durable and has a long lifespan. I am very happy with this product.

Isabella Alves

4.9

out of

5

The CVD diamond is very easy to use and install. I am very happy with the results.

Layla Moreau

4.7

out of

5

I am very satisfied with the speed of delivery of the CVD diamond. I received it within a few days of ordering it.

Clara Silva

4.8

out of

5

The CVD diamond is very affordable and is a great value for money. I highly recommend this product.

Sophia Rodrigues

4.9

out of

5

The CVD diamond is very technologically advanced and is a great choice for thermal management applications.

Ema Santos

4.7

out of

5

I am very impressed with the performance of the CVD diamond. It has greatly improved the cooling of my electronic devices.

Maria Costa

4.8

out of

5

The CVD diamond is very reliable and has been working perfectly since I installed it.

Beatriz Oliveira

4.9

out of

5

I am very happy with the customer service of KINTEK SOLUTION. They were very helpful and answered all my questions.

Ana Almeida

4.7

out of

5

I would definitely recommend the CVD diamond to other laboratory managers. It is a great product for thermal management.

Luisa Fernandes

4.8

out of

5

I am very satisfied with the overall quality of the CVD diamond. It is a well-made product.

Inês Castro

4.9

out of

5

The CVD diamond is very easy to maintain and clean. I am very happy with this product.

Sara Santos

4.7

out of

5

I am very impressed with the speed of delivery of the CVD diamond. I received it within a few days of ordering it.

Joana Sousa

4.8

out of

5

The CVD diamond is very affordable and is a great value for money. I highly recommend this product.

Maria Pereira

4.9

out of

5

The CVD diamond is very technologically advanced and is a great choice for thermal management applications.

Beatriz Oliveira

4.7

out of

5

I am very impressed with the performance of the CVD diamond. It has greatly improved the cooling of my electronic devices.

Ana Almeida

4.8

out of

5

I would definitely recommend the CVD diamond to other laboratory managers. It is a great product for thermal management.

Luisa Fernandes

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