Low temperature spacer for advanced semiconductor devices
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United States of America Patent
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Mar 22, 2016
Grant Date -
Aug 20, 2015
app pub date -
Jul 14, 2014
filing date -
Feb 20, 2014
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Abstract
Embodiments of the present invention provide semiconductor structures and methods for making the same that include a boron nitride (BN) spacer on a gate stack, such as a gate stack of a planar FET or FinFET. The boron nitride spacer is fabricated using atomic layer deposition (ALD) and/or plasma enhanced atomic layer deposition (PEALD) techniques to produce a boron nitride spacer at relatively low temperatures that are conducive to devices made from materials such as silicon (Si), silicon germanium (SiGe), germanium (Ge), and/or III-V compounds. Furthermore, the boron nitride spacer may be fabricated to have various desirable properties, including a hexagonal textured structure.
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