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Measurements of dislocations in 4H-SiC with rocking curve imaging
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Measurements of dislocations in 4H-SiC with rocking curve imaging
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Journal Article
Measurements of dislocations in 4H-SiC with rocking curve imaging
2025
Overview
4H Silicon Carbide (4H-SiC) combines many attractive properties such as a high carrier mobility, a wide bandgap, and a high thermal conductivity, making it an ideal candidate for high-power electronic devices. However, a primary challenge in utilizing 4H-SiC is the presence of defects in epitaxial layers, which can significantly degrade device performance. In this study, we have used X-ray transmission topography with a rocking curve imaging technique to characterize the types and distribution of defects in 4H-SiC. Gaussian fitting was applied to the rocking curves, and the resulting maps were used to investigate dislocations in 4H-SiC. Understanding the distribution of the dislocations provides valuable insights into the overall crystal quality, which can guide improvements for the fabrication processes.
Publisher
IOP Publishing
