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Influence of Growth Conditions and Substrate Properties on Formation of Interfacial Dislocations and Dislocation Half-loop Arrays in 4H-SiC(0001) and (000-1) Epitaxy

Published online by Cambridge University Press:  01 February 2011

Hidekazu Tsuchida
Affiliation:
tsuchida@criepi.denken.or.jp, CRIEPI, Materials Science Research Laboratory, 2-6-1 Nagasaka, Yokosuka, Kanagawa, 240-0196, Japan, +81-70-6568-9557, +81-46-856-5571
Isaho Kamata
Affiliation:
kamata@criepi.denken.or.jp, Central Research Institute of Electric Power Industry (CRIEPI), 2-6-1 Nagasaka, Yokosuka, Kanagawa, 240-0196, Japan
Kazutoshi Kojima
Affiliation:
kazu-kojima@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8568, Japan
Kenji Momose
Affiliation:
Kenji_Momose@SDK.co.jp, SHOWA DENKO K.K. (SDK), 1505 Shimokagemori, Chichibu, Saitama, 369-1871, Japan
Michiya Odawara
Affiliation:
Michiya_Odawara@sdk.co.jp, SHOWA DENKO K.K. (SDK), 1505 Shimokagemori, Chichibu, Saitama, 369-1871, Japan
Tetsuo Takahashi
Affiliation:
tetsuo-takahashi@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8568, Japan
Yuuki Ishida
Affiliation:
y-ishida@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8568, Japan
Keiichi Matsuzawa
Affiliation:
Keiichi_Matuzawa@sdk.co.jp, SHOWA DENKO K.K. (SDK), 1505 Shimokagemori, Chichibu, Saitama, 369-1871, Japan
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Abstract

Formation of interfacial dislocations (IDs) and dislocation half-loop arrays (HLAs) and their appearance in 4H-SiC epi-wafers are investigated by X-ray topography and KOH etching analysis. Synchrotron reflection X-ray topography demonstrates the ability to image IDs and HLAs simultaneously and reveal their densities as well as spatial distributions in the epi-wafers. The vertical location of IDs in the epi-wafer is also examined by this technique. The influence of wafer warp, in-situ H2 etching prior to epitaxial growth, substrate off-angle as well as the growth face (Si-face and C-face) on the densities and spatial distributions of IDs and HLAs are discussed.

Type
Research Article
Copyright
Copyright © Materials Research Society 2008

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References

REFERENCES

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Influence of Growth Conditions and Substrate Properties on Formation of Interfacial Dislocations and Dislocation Half-loop Arrays in 4H-SiC(0001) and (000-1) Epitaxy
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Influence of Growth Conditions and Substrate Properties on Formation of Interfacial Dislocations and Dislocation Half-loop Arrays in 4H-SiC(0001) and (000-1) Epitaxy
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Influence of Growth Conditions and Substrate Properties on Formation of Interfacial Dislocations and Dislocation Half-loop Arrays in 4H-SiC(0001) and (000-1) Epitaxy
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