Evidence of terbium and oxygen co-segregation in annealed AlN:Tb

Abstract

Analytical scanning transmission electron microscopy has been applied to study aluminium nitride (AlN) doped with terbium (Tb) and annealed at 800 ºC. The correlation of the maps of Tb and oxygen (O) from electron energy-loss spectrum (EELS) imaging proves that these two elements co-segregate, replacing aluminium (Al) and nitrogen (N) atoms, respectively. This agrees well with modelling which predicted the existence of Tb–O complexes needed to fit all lines in the rather complicated cathodoluminescence emission spectrum of the sample.

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Item Type:	Article
Authors/Creators:	Angadi, V.C. Benz, F. Tischer, I. Thonke, K. Aoki, T. Walther, T. https://orcid.org/0000-0003-3571-6263
Copyright, Publisher and Additional Information:	© 2017 The Authors. This is an author produced version of a paper subsequently published in Applied Physics Letters. Uploaded in accordance with the publisher's self-archiving policy.
Dates:	Published: 31 May 2017 Accepted: 15 May 2017
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	15 Jun 2017 07:54
Last Modified:	22 Mar 2018 15:44
Published Version:	https://doi.org/10.1063/1.4984237
Status:	Published
Publisher:	AIP Publishing
Refereed:	Yes
Identification Number:	10.1063/1.4984237
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:117777

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Evidence of terbium and oxygen co-segregation in annealed AlN:Tb

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