Advanced Ceramics in Semiconductor Manufacturing

From wafer fabrication to packaging, every processing step in semiconductor manufacturing has strict requirements on materials. Which material can withstand high temperature and strong corrosion, as well as ensuring the purity and yield? Advanced ceramic materials are the solutions.

This article will tell you the benefits, types and uses of advanced ceramic materials in the semiconductor manufacturing, helping you match your specific production needs with certain ceramic accurately.

Table of Contents

Advantages of Advanced Ceramic in the Semiconductor Manufacturing

Advanced ceramic materials compensate for the properties of traditional metal and plastic. Until now, advanced ceramic materials have become the key to improving production yield, extending equipment service life, and adapting to high-end semiconductor manufacturing.

Ceramic Products in Semiconductor Manufacturing

The benefits of advanced ceramic materials in the semiconductor industry are particular. This is the main reason for their widespread application.

First, the excellent high-temperature resistance of advanced ceramics is suited to the high-temperature processes in semiconductor production. Ceramic materials maintain structural stability in high-temperature environments such as thin-film deposition and wafer thermal processing, without deformation or impurities.

Besides, corrosion resistance and high purity enable advanced ceramics to withstand the attack from solutions and plasmas. The electrical insulation of advanced ceramics ensures safety during the process. Their excellent wear resistance extends the parts’ life, reduces your replacement frequency, and thus lowers your production costs.

Advanced ceramics have the precise dimensional stability that meets the high-precision requirements of semiconductor manufacturing. The right advanced ceramic material will improve the efficiency of your semiconductor manufacturing, which is important for achieving high-end manufacturing.

Advanced Ceramic for Semiconductor Production

To meet the different requirements of various semiconductor manufacturing processes, the appropriate ceramic materials vary. Next text will introduce 4 advanced ceramic materials applicable to semiconductor production.

High-Purity Alumina: The Highest Cost-Performance Option

High-purity alumina is one of the most widely used and cost-effective materials in semiconductor production. You can find it in insulating components and wafer carriers throughout the cleanroom. With its high hardness, melting point of about 2050℃, excellent electrical insulation, and chemical stability, high-purity alumina ceramic is perfect for semiconductor manufacturing.

Alumina Ceramic Components for Semiconductor Manufacturing

The uses of high-purity alumina ceramic components are diverse. In photolithography of wafer fabrication, high-purity alumina is a material for ultra-precise guide rails in lithography equipment. Its high modulus of elasticity and low thermal expansion coefficient enable minimal deformation, ensuring the straightness of the workpiece stage motion trajectory, maintaining lithography accuracy.

In wafer dicing and scribing, high-purity alumina ceramic is used for cutting blade holders and guide wheels. Because of its high strength and wear resistance, it provides stable support for the cutting tools, preventing edge chipping and scratches of the wafer, improving dicing yield.

In the vacuum chambers of semiconductor equipment, some insulating partitions and support pillars are also made from high-purity alumina ceramic. They can withstand vacuum and high-temperature working conditions, ensuring long-term stable operation of the equipment.

Aluminum Nitride: Best for High-Temperature Heat Dissipation

If your semiconductor manufacturing needs heat dissipation, aluminum nitride ceramic is undoubtedly the preferred one. Aluminum nitride ceramic possesses thermal conductivity reaches 200 W/(m·K), far exceeding ordinary ceramics. It also provides a thermal expansion coefficient close to Si, addressing your heat dissipation problems effectively.

Aluminum nitride parts conduct heat away from the heater rapidly, ensuring a uniform temperature in chamber. In thin-film deposition processes in the CVD/PVD equipment, the heater susceptors, RF electrode insulating layers, and heat-dissipating components inside the deposition chamber are mostly produced by aluminum nitride ceramic.

In wafer thermal processing, aluminum nitride is used to produce wafer carriers and thermal processing trays. These parts withstand a high temperature of 1200℃. Their rapid heat transfer will prevent local overheating. One important thing is that aluminum nitride ceramic parts do not react with the wafer.

Aluminum nitride ceramic also serves as a high-end chip substrate for heat dissipation in the chip packaging. Heat spreaders made of aluminum nitride can quickly dissipate the heat generated, preventing performance degradation caused by overheating. Its electrical insulation isolates the chip and heat-dissipation structure, enhancing the reliability of packaging.

Silicon Carbide: Ideal for Etching Processes

For etching equipment and processes under extreme environments, you may seek materials with exceptional wear and plasma corrosion resistance. Silicon carbide ceramic meets these demands. Its hardness is second only to diamond, with long-term service temperatures exceeding 1400℃. Silicon carbide can withstand strong corrosion from fluorine-based and chlorine-based plasmas, showing minimal wear and virtually no impurity release.

Plasma etching is the main application environment for silicon carbide ceramic. Many parts inside the etching chambers are made of silicon carbide ceramic. Silicon carbide focus ring can ensure uniform plasma distribution on the wafer surface, guaranteeing the precision and consistency of the etching.

Inner chamber walls and showerheads made of silicon carbide can operate for long periods stably in highly corrosive plasma environments. It can prevent defects caused by wear and corrosion to extend equipment service life, reducing your overall costs.

4H-SiC powder can be used to produce silicon carbide substrates. Their exceptional thermal management capabilities address heat dissipation in high-end chips. In certain high-temperature, high-wear auxiliary processes, like wafer transfer system arms and seals in high-temperature equipment, silicon carbide ceramic can also be employed. Its superior wear resistance significantly extends the service life of those parts.

Silicon Nitride: Meeting Your Thermal Shock Resistance Needs

If you need to handle high-temperature thermal shock, the advantages of silicon nitride ceramic become pronounced. Silicon nitride can work at temperatures over 1300℃ for a long time. It can also resist deformation under rapid heating and cooling. Silicon nitride offers high strength, high toughness, excellent wear resistance, and good chemical resistance.

In the processes that involve frequent temperature ramping, such as RTA and high-temperature sintering, silicon nitride ceramic is an excellent choice. Silicon nitride ceramic is produced for wafer carriers, thermal processing boats, and support components for heating furnace tubes. Silicon nitride carrier maintains its structure during rapid thermal cycling, securely supporting the wafer.

Silicon nitride ceramic bearings can operate in high-temperature and vacuum environment reliably without lubrication. It eliminates the risk of lubricant contamination, meeting the ultra-clean requirements of semiconductor production. Silicon nitride wafer transfer arms, at the same time, remain stable and undeformed during high-temperature wafer handling. Such precise and efficient wafer transportation improves overall production efficiency.

Conclusion

Overall, you should choose ceramic materials based on your production needs. For the 4 advanced ceramics mentioned in the article, high-purity alumina has the best insulation and wear resistance. You may choose aluminum nitride ceramic for efficient heat dissipation, and silicon carbide ceramic is perfect for corrosive environment. Silicon nitride ceramic possesses superior thermal shock resistance.

Newthink Alumina Semiconductor Manufacturing Component Factory

As a supplier with 14 years of specialization in advanced ceramic products, Newthink New Materials knows the concerns you face in advanced ceramic material selection. Whether it involves requirements for purity, precision, or cost, Newthink can provide you with customized solutions. We are ready to help you find the advanced ceramic material best suited to your semiconductor manufacturing.

Thanks for your reading. Hope this article will be helpful.

FAQs

Is a ceramic a semiconductor?

Generally no. Most ceramics are insulators. Some specific engineered ceramics can be modified to function as semiconductors.

Can electricity pass through ceramic?

Most traditional ceramics cannot conduct electricity. Some ceramics conductive under special conditions, e.g., extreme temperatures or chemical doping.

Are ceramics used in semiconductors?

Yes, extensively. Ceramics serve as vital packaging, substrates, and insulators for semiconductor devices while they are rarely the semiconductor material.

Why are ceramic materials so useful in manufacturing electronics?

Ceramics offer a unique combination of properties of high thermal stability, thermal conductivity, electrical insulation, and durability. They can withstand high heat without deforming, help dissipate heat away from components, prevent short circuits, and are resistant to chemical corrosion and wear.