Development of 3-Channel Inspection Analysis Technique for Defects of SiC Epitaxial Wafers Using Optical Inspection, Photoluminescence and X-Ray Topography

Article Preview

Abstract:

3-channel analysis technique consisting of optical inspection, photoluminescence and X-ray topography methods for defect inspection of SiC epitaxial wafers has been investigated. The effectiveness of SiC wafer inspection image correction to enable automatic defect analysis is verified. Next, it is shown that the 3-channel analysis technique improves SiC defect inspection accuracy compared to conventional 2-channel analysis one.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

143-147

Citation:

Online since:

August 2024

Export:

Share:

Citation:

* - Corresponding Author

[1] I. Kamata, X. Zhang, H. Tsuchida, Photoluminescence of Frank-type defects on the basal plane in 4H-SiC epilayers, Appl.Phys. Lett. 97 (2010) 172107.

DOI: 10.1063/1.3499431

Google Scholar

[2] T. Yamashita, H. Matsuhata, Y. Miyasaka, M. Odawara, K. Momose, T. Sato, M. Kitabatake, Characterization of (4,4)- and (5,3)-type stacking faults in 4deg.-off 4H-SiC epitaxial wafers by synchrotron X-ray topography and by photo-luminescence spectroscopy, Mater. Sci. Forum, 740-742 (2013) 585-588.

DOI: 10.4028/www.scientific.net/msf.740-742.585

Google Scholar

[3] M. Nagano, I. Kamata, H. Tsuchida, Photoluminescence imaging and discrimination of threadingdislocations in 4H-SiC epilayers, Mater. Sci. Forum, 778-780 (2014) 313-318.

DOI: 10.4028/www.scientific.net/msf.778-780.313

Google Scholar

[4] IEC standard, Non-destructive recognition criteria of defects in silicon carbide homoepitaxial wafer for power devices - Part 1: Classification of defects, IEC 63068-1:2019 (2019).

DOI: 10.3403/30351626

Google Scholar

[5] IEC standard, Non-destructive recognition criteria of defects in silicon carbide homoepitaxial wafer for power devices - Part 2: Test method for defects using optical inspection, IEC 63068-2:2019 (2019).

DOI: 10.3403/30366380u

Google Scholar

[6] J. Senzaki, A. Maeda, S. Fujiki, H. Seki, K. Morikawa, Y. Ueji, K. Omote, Development in advanced inspection system for detecting defects in SiC epitaxial wafers: presented at the 18th Conference on Defects - Recognition, Imaging and Physics in Semiconductors, Belrin, Germany, 2019 (unpublished).

Google Scholar

[7] J. Senzaki, R. Kosugi, K. Masumoto, T. Mitani, T. Kuroiwa, H. Yamaguchi, Influence of SiC epitaxial wafer quality on yield of 1.2kV SiC-DMOSFETs, in Proceedings of the 2022 IEEE International Reliability Physics Symposium (IRPS), edited by IEEE, (2022) P63.

DOI: 10.1109/irps48227.2022.9764475

Google Scholar

[8] JEITA standard, Non-destructive recognition procedures of defects in Silicon Carbide Wafer - Part 3: The measurement method for defects in Silicon Carbide Wafer using photoluminescence, JEITA EDR-4712/300 (2018).

DOI: 10.3403/30382425u

Google Scholar

[9] JEITA standard, Non-destructive recognition procedures of defects in Silicon Carbide Wafer - Part 4: The guideline for identifying and evaluating defects in Silicon Carbide Wafer using a combined method of optical inspection and photoluminescence, JEITA EDR-4712/400 (2020).

DOI: 10.3403/30440432

Google Scholar

[10] JEITA standard, Non-destructive recognition procedures of defects in Silicon Carbide Wafer - Part 5: The measurement method for defects in Silicon Carbide Wafer using X-ray topography, JEITA EDR-4712/500 (2023).

DOI: 10.3403/30382425u

Google Scholar