The commercial importance of epitaxy comes mostly from its use in the growth of semiconductor materials for forming layers and quantum wells in electronic and photonic devices—for example, in computer, video display, and telecommunications applications.

What is the purpose of epitaxial layer?

For the efficient emission or detection of photons, it is often necessary to constrain these processes to very thin semiconductor layers. These thin layers, grown atop bulk semiconductor wafers, are called epitaxial layers because their crystallinity matches that of the substrate even though…

Why epitaxial process is needed in VLSI?

Epitaxial processes are used to add varying proportions of donor or acceptor impurities as per requirement. Four silicon sources are used for growing Epitaxial silicon : Silicon tetrachloride. Silane.