2016
DOI: 10.4028/www.scientific.net/msf.858.225
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Study of Triangle-Shaped Defects on Nearly On-Axis 4H-SiC Substrates

Abstract: Triangle-shaped defects are one of the most common surface defects on epitaxial growth of 4H-SiC epilayer on nearly on-axis SiC substrate. In this paper, we investigate the feature and structure of such defects using Nomarski optical microscopy (NOM), micro-Raman spectroscopy and high resolution transmission electron microscopy (HR-TEM). It is found that triangle-shaped defects were composed of a thick 3C-SiC polytype, as well as 4H-SiC epilayer.

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Cited by 2 publications
(1 citation statement)
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“…The second type counts for 1.56% of the dead dies, and they were caused by substrate inherited micropipes. The triangular defect, as the third type, which is a well-known killer-defect that is mainly related to downfalls, TSDs in the substrate, or scratches at the sub/epi interface, 21,22 counts for another 1.56%. The impacts of the above defects on a device have been studied in detail, 21,24 and will not be addressed here.…”
Section: Resultsmentioning
confidence: 99%
“…The second type counts for 1.56% of the dead dies, and they were caused by substrate inherited micropipes. The triangular defect, as the third type, which is a well-known killer-defect that is mainly related to downfalls, TSDs in the substrate, or scratches at the sub/epi interface, 21,22 counts for another 1.56%. The impacts of the above defects on a device have been studied in detail, 21,24 and will not be addressed here.…”
Section: Resultsmentioning
confidence: 99%