Knowledge What is the Sputtering System for Deposition? (5 Key Points Explained)
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Tech Team · Kintek Solution

Updated 2 months ago

What is the Sputtering System for Deposition? (5 Key Points Explained)

Sputtering is a physical vapor deposition (PVD) technique used to create thin films.

It ejects atoms from a target material through the impact of high-energy particles, typically gaseous ions.

This process allows for the deposition of materials onto a substrate without melting the target.

This is advantageous for materials with high melting points.

5 Key Points Explained: What is the Sputtering System for Deposition?

What is the Sputtering System for Deposition? (5 Key Points Explained)

1. Mechanism of Sputtering

In sputtering, a target material is placed in a vacuum chamber filled with a controlled gas, usually argon.

The target is negatively charged, becoming a cathode, which initiates the flow of free electrons.

These electrons collide with argon atoms, knocking off their outer electrons and transforming them into high-energy ions.

These ions then collide with the target material, ejecting atoms from its surface.

2. Deposition Process

The ejected atoms from the target form a cloud of source material.

This cloud then condenses onto a substrate placed within the chamber.

This results in the formation of a thin film on the substrate.

The substrate can be rotated and heated to control the deposition process and ensure uniform coverage.

3. Advantages and Applications

Sputtering is favored for its ability to deposit a wide range of materials, including metals, oxides, alloys, and compounds.

The kinetic energy of the sputtered atoms is typically higher than that of evaporated materials, leading to better adhesion and denser films.

This technique is particularly useful for materials that are difficult to deposit by other methods due to their high melting points.

4. System Configuration

The sputtering system includes multiple sputtering guns powered by both direct current (DC) and radio frequency (RF) power sources.

This setup allows for flexibility in depositing different materials and controlling the deposition parameters.

The system can handle a maximum deposition thickness of 200 nm.

Targets are regularly maintained and replaced to ensure quality and consistency in the deposition process.

5. Limitations and Restrictions

Certain materials, such as copper, gold, and silver, are not allowed in the large sputtering system due to specific operational constraints.

However, these can be accommodated in smaller systems or under specific conditions, often with additional fees.

Continue exploring, consult our experts

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