Elimination of Silicon Droplets Formation during 4H-SiC Epitaxial Growth by Chloride-Based CVD in a Vertical Hot-Wall Reactor

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Abstract:

The growth pits formed during 5-10 μm 4H-SiC epitaxial growth by a home-built vertical hot-wall CVD reactor are investigated and their formation mechanisms are discussed. The origin of the growth pits is believed to be the silicon droplets related to the unoptimized growth condition. The growth pits are successfully removed by adding more HCl to the in-situ etching stage and the after-growth cooling stage.

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Materials Science Forum (Volume 1014)

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3-7

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November 2020

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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