Cracks and dislocation structures in AlGaN systems

We have performed a complex study of the dislocation/crack distribution in the misfit‐strained AlGaN/GaN systems. Two different samples were analysed without and with top GaN overlayer. The co‐existence of the optically visible dominant cracks with the AlGaN–GaN interface‐related subdominant crack s...

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Bibliographic Details
Published inPhysica status solidi. C no. 7; pp. 2432 - 2435
Main Authors Maksimov, I. L., Li, H. D., Sugahara, T., Tsukihara, M., Mori, A., Sakai, S.
Format Journal Article
LanguageEnglish
Published Berlin WILEY-VCH Verlag 01.12.2003
WILEY‐VCH Verlag
Subjects
68.37.Lp
68.55.Jk
78.60.Hk
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Summary:We have performed a complex study of the dislocation/crack distribution in the misfit‐strained AlGaN/GaN systems. Two different samples were analysed without and with top GaN overlayer. The co‐existence of the optically visible dominant cracks with the AlGaN–GaN interface‐related subdominant crack system is reported. The structure of the subdominant crack network is analysed; strong correlation between subdominant cracks and the interface‐related edge dislocations is revealed. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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ISSN:1610-1634
1610-1642
DOI:10.1002/pssc.200303308