University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Structural and electronic properties of line defects in GaN

Elsner, J, Blumenau, AT, Frauenheim, T, Jones, R and Heggie, MI (2000) Structural and electronic properties of line defects in GaN MRS Internet Journal of Nitride Semiconductor Research, 5 (SUPPL.).

Full text not available from this repository.

Abstract

We present density-functional theory based studies for several types of line defects in both hexagonal and cubic GaN. {10-10} type surfaces play an important role in hexagonal GaN since similar configurations occur at open-core screw dislocations and nanopipes as well as at the core of threading edge dislocations. Except for full-core screw dislocations which possess heavily strained bonds all investigated stoichiometric extended defects in hexagonal GaN do not induce deep acceptor states in the band-gap and thus cannot be responsible for the yellow luminescence. However, electrically active point defects in particular gallium vacancies and oxygen related defect complexes are found to be trapped at the stress field of the dislocations. Preliminary calculations for cubic GaN find the ideal stoichiometric 60°-dislocations to be electrically active. As in hexagonal material, vacancies and impurities like oxygen are likely to be trapped at the dislocation core.

Item Type: Article
Authors :
NameEmailORCID
Elsner, JUNSPECIFIEDUNSPECIFIED
Blumenau, ATUNSPECIFIEDUNSPECIFIED
Frauenheim, TUNSPECIFIEDUNSPECIFIED
Jones, RUNSPECIFIEDUNSPECIFIED
Heggie, MIm.heggie@surrey.ac.ukUNSPECIFIED
Date : 1 December 2000
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:43
Last Modified : 17 May 2017 12:43
URI: http://epubs.surrey.ac.uk/id/eprint/836454

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800