Method and apparatus for controlled dopant incorporation and activation in a chemical vapor deposition system
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United States of America Patent
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Aug 29, 2017
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Jul 30, 2015
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Jul 30, 2015
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Embodiments include systems and methods for producing semiconductor wafers having reduced quantities of point defects. These systems and methods include a tunable ultraviolet (UV) light source, which is controlled to produce a raster of a UV light beam across a surface of a semiconductor wafer during epitaxial growth to dissociate point defects in the semiconductor wafer. In various embodiments, the tunable UV light source is configured external to a Metal Organic Chemical Vapor Deposition (MOCVD) chamber and controlled such that the UV light beam is directed though a window defined in a wall of the MOCVD chamber.
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