STUDY OF OPEN-CORE DISLOCATIONS IN GAN FILMS ON (0001)-SAPPHIRE

Authors
VENNEGUES P BEAUMONT B VAILLE M GIBART P
Citation
P. Vennegues et al., STUDY OF OPEN-CORE DISLOCATIONS IN GAN FILMS ON (0001)-SAPPHIRE, Applied physics letters, 70(18), 1997, pp. 2434-2436
Citations number
16
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
70
Issue
18
Year of publication
1997
Pages
2434 - 2436
Database
ISI
SICI code
0003-6951(1997)70:18<2434:SOODIG>2.0.ZU;2-P
Abstract
This article deals with a plan view and cross section transmission ele ctron microscopy study of columnar defects in GaN films epitaxially gr own on sapphire (0001). They are identified as open-core (0001) Burger s vector dislocations. Their behavior along the film thickness is desc ribed: it alternates from open core sections (nanopipes) to closed cor e sections. This alternating behavior is observed in the first 0.5 mu m close to the interface with sapphire. (C) 1997 American Institute of Physics.