How is an EUV mask made?
Optical masks consist of an opaque layer of chrome on a glass substrate. In contrast, an EUV mask consists of 40 to 50 alternating layers of silicon and molybdenum on top of a substrate, resulting in a multi-layer stack. On the stack, there is a ruthenium-based capping layer, followed by an absorber based on tantalum.
How does EUV lithography work?
A lithography system essentially is a projection system. An EUV system uses a high-energy laser that fires on a microscopic droplet of molten tin and turns it into plasma, emitting EUV light, which then is focused into a beam.
What is EUV lithography machine?
Extreme ultraviolet lithography (also known as EUV or EUVL) is a lithography (mainly chip printing/making aka “fabricating”) technology using a range of extreme ultraviolet (EUV) wavelengths, roughly spanning a 2% FWHM bandwidth about 13.5 nm.
How much does a EUV lithography machine cost?
Each EUV machine has over 100,000 parts and costs $150 million. They’re shipped in 40 freight containers or four jumbo jets.
Who makes EUV lithography?
TSMC
ASML’s current generation of EUV machines can create chips with a resolution of 13 nanometers. The next generation will use High-NA to craft features 8 nanometers in size. The most prominent company using EUV today is TSMC, whose customers include Apple, Nvidia, and Intel.
Can China develop EUV lithography?
It is estimated that China will be able to achieve a key breakthrough in the development of deep ultraviolet (DUV) lithography systems in less than three years, and in EUV in less than five years.
Why EUV lithography is important?
EUV (Extreme Ultraviolet) lithography uses an EUV light of the extremely short wavelength of 13.5 nm. It allows exposure of fine circuit patterns with a half-pitch below 20 nm that cannot be exposed by the conventional optical lithography using an ArF excimer laser.
