Observation of coreless edge and mixed dislocations in Mg-doped Al0.03Ga0.97N

D. Cherns, Y. Q. Wang, R. Liu, Fernando Ponce

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

The core structure of threading dislocations in Mg-doped Al0.03Ga0.97N thin films was examined using transmission electron microscopy. It was demonstrated that edge and mixed dislocations in Mg-doped Al0.03Ga0.97N films can have hollow cores with diameters in the range of 1-5 nm. A model was presented in which hollow core formation is initiated by the segregation and subsequent precipitation of Mg at these dislocation cores.

Original languageEnglish (US)
Pages (from-to)4541-4543
Number of pages3
JournalApplied Physics Letters
Volume81
Issue number24
DOIs
StatePublished - Dec 9 2002

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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