Thin films are layers of material deposited on a bulk substrate in order to impart properties that cannot be easily attained (or not attained at all) by the base material. Thin film deposition refers to the action of applying a thin film of any substance on a surface, whether a substrate or already deposited layers.7 Dec 2018
What is thin film materials?
Thin film materials are high purity materials and chemicals used to form or modify thin film deposits and substrates. Examples include precursor gases, sputtering targets, and evaporation filaments.
What is a thin film coating?
Thin film coatings are used in a wide range of applications for many purposes. They can be used to protect displays from scratches or environmental exposure, create a specific degree of reflectivity on a lens or build layers of metallization on semiconductor wafers.
What are the types of thin film?
- Optical thin films: Used to create reflective coatings, anti-reflective coatings, solar cells, monitors, waveguides and optical detector arrays.
- Electrical or electronic thin films: Used to make insulators, conductors, semiconductor devices, integrated circuits and piezoelectric drives.
Why are thin films used?
Thin films are used for protecting the surface of many material, especially optical elements, from wear, scratches, fingerprints, and even from corrosion.
What is the principle of thin film?
There are two principal approaches to achieve this effect, namely Subtractive, or the Etch Back process; and Additive, or the Lift Off process. Subtractive, or the Etch Back process involves the coating of the entire surface, followed by the removal of select portions to form the desired pattern.25 Jul 2013
What are the properties of film?
— The mechanical properties of film, such as tensile strength, elongation, modulus of elasticity, cold flow, folding endurance, and tearing resistance, are discussed and comparisons made between various films.
Which technique is good for thin film deposition?
In order to obtain thin films with good quality, there are two common deposition techniques: physical and chemical depositions. It can be summarized as shown in Table 1. Vacuum thermal evaporation. Electron beam evaporation.
Which material can be used for making thin films?
We can make high purity custom alloys, precious metals, ceramics and non-precious metals. As previously mentioned, other commonly used films include a range of metals, non-metals such as ceramics and PVD materials all of which are ideal for creating specific kinds of thin films.5 Feb 2016
Which type of technology is used in thin film?
Basically, most of the materials can be grown as thin-film form, and various thin film growth techniques have been applied, such as magnetron sputtering, pulsed laser deposition (PLD), Metal-organic Chemical Vapor Deposition (MOCVD), Molecular beam epitaxy (MBE) and so on.15 Sept 2021