How is sputter deposition used to deposit thin films?
How is sputter deposition used to deposit thin films?
Sputter deposition is a widely used technique to deposit thin films on substrates. The technique is based on ion bombardment of a source material, the target. Ion bombardment results in a vapor due to a purely physical process, i.e., the sputtering of the target material.
Where does sputtering occur in a RF power supply?
On the positive cycle electrons are attracted to the target material or cathode giving it a negative bias. On the negative portion of the cycle – which is occurring at the radio frequency of 13.56 MHz used internationally for RF power supply equipment – ion bombardment of the target to be sputtered continues. What is Sputtering? Video
What makes a compound a reactively sputtering target?
The sputtering target provides a long-lived vaporization source that can be mounted so as to vaporize in any direction. Compound materials such as TiN and zirconium nitride (ZrN) are commonly “reactively sputter deposited” by using a reactive gas in the plasma.
Which is the best definition of a sputtering source?
The sputtering source can be an element, alloy, mixture, or a compound and the material is vaporized with the bulk composition of the target. The sputtering target provides a long-lived vaporization source that can be mounted so as to vaporize in any direction.
Is it safe to use a sputtering faucet?
Sputtering faucets are often attributed to air in the pipes and ignored. If your faucet sputters only now and then, this is probably true and is harmless.
What is the result of a high sputtering rate?
This results in a high plasma rate, a consequence of which is the possible pressure reduction to about 10-1 – 10-2 Pa) with the same sputtering rate. This allows the production of thin layers with a different microstructure than would be possible at higher pressures.
What are the different types of sputtering targets?
The diversity of sputtering target shapes (circular, rectangular, Delta, tubular…) and the materials used allows creating all types of thin layers, including alloys during a single run. Image Source: nasa.gov. “Inside the Plasma Spray-Physical Vapor Deposition, or PS-PVD”
How is the process of sputtering used in optical applications?
The process is also employed in optical applications by depositing a thin layer on glass. The process of sputtering occurs at extremely low temperatures, due to which, it is the perfect method for depositing thin films of different constituents. This application of the Sputtering process is the most important one and commonly used.
