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Term (Index) Definition
Molecular Beam Epitaxy, MBE  physical deposition process (basically evaporation) carried out in ultra-high vacuum (below 10-8 torr) and at substrate temperature typically not exceeding 800 oC; due to unobstructed (molecular) flow of species to be deposited and chemical cleanliness of the substrate surface highly controlled growth of ultra-thin epitaxial layers is possible; the highest precision deposition method used in semiconductor processing.
epitaxy  process by which thin layer of single-crystal material is deposited on single-crystal substrate; epitaxial growth occurs in such way that the crystallographic structure of the substrate is reproduced in the growing material; also crystalline defects of the substrate are reproduced in the growing material.
superlattice  semiconductor structure comprising of several ultra-thin layers (atomic layers) engineered to obtain specific electronic and photonic properties; slight modifications of chemical composition of each layer result in slight variations of energy bandgap from layer to layer: bandgap engineering; fabrication of superlattices requires high-precision heteroepitaxial deposition methods such as MBE and MOCVD; typically involves III-V semiconductors.
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Created and operated by J. Ruzyllo. Copyright J. Ruzyllo 2001-2016. All rights reserved.

Information in this glossary is provided at the author's discretion. Any liability based on, or related to the contents of this glossary is disclaimed.