Knowledge What are the 10 Disadvantages of Sputtering Deposition?
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Tech Team · Kintek Solution

Updated 2 months ago

What are the 10 Disadvantages of Sputtering Deposition?

Sputtering deposition is a widely used technique in various industries, but it comes with its own set of challenges. Here are the key disadvantages you should be aware of.

What are the 10 Disadvantages of Sputtering Deposition?

What are the 10 Disadvantages of Sputtering Deposition?

1. Low Deposition Rates

Compared to other deposition methods like thermal evaporation, sputtering rates are generally lower. This means it takes longer to deposit a desired thickness of film.

2. Non-Uniform Deposition

In many configurations, the distribution of the deposition flux is non-uniform. This requires moving fixturing to obtain films of uniform thickness. Sputtering deposition is not suitable for depositing large-area films of uniform thickness.

3. Expensive Targets and Poor Material Use

Sputtering targets are often expensive, and the material use during the deposition process may not be efficient.

4. Heat Generation

Most of the energy incident on the target in sputtering becomes heat, which must be removed. This requires the use of a cooling system, which can decrease production rate and increase energetic costs.

5. Film Contamination

In some cases, gaseous contaminants in the plasma can become "activated" and cause film contamination. This can be more problematic than in vacuum evaporation.

6. Control of Reactive Sputter Deposition

In reactive sputter deposition, the gas composition must be carefully controlled to prevent poisoning the sputtering target.

7. Difficulty in Combining with Lift-Off Process

The diffuse transport characteristic of sputtering makes it difficult to combine with a lift-off process for structuring the film. This can lead to contamination problems.

8. Impurities in Substrate

Sputtering has a greater tendency to introduce impurities in the substrate compared to deposition by evaporation because it operates under a lesser vacuum range.

9. Difficulty in Accurate Control of Film Thickness

Although sputtering allows for high deposition rates without a limit of thickness, it does not allow for accurate control of film thickness.

10. Degradation of Organic Solids

Some materials, such as organic solids, are easily degraded by ionic bombardment during the sputtering process.

Continue exploring, consult our experts

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