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Cathodoluminescence Study of Indented ZnO Crystals

Published online by Cambridge University Press:  01 February 2011

Juan Jiménez ,
Manuel Avella ,
Juan Jiménez ,
Tomás Rodríguez ,
Michael Callahan ,
E. Grant ,
K. Rakes ,
David Bliss  and
Buguo Wang
Juan Jiménez
Affiliation:
[email protected], Universidad de Valladolid, Física de la Materia Condensada, E.T.S.I.I., Paseo del Cauce s/n, Valladolid, 47011, Spain, +34 983423191
Manuel Avella
Affiliation:
[email protected], Universidad de Valladolid, Física de la Materia Condensada, E.T.S.I.I, Paseo del Cauce s/n, Valladolid, 47011, Spain
Juan Jiménez
Affiliation:
[email protected], Universidad de Valladolid, Física de la Materia Condensada, E.T.S.I.I, Paseo del Cauce s/n, Valladolid, 47011, Spain
Tomás Rodríguez
Affiliation:
[email protected], Universidad Politécnica de Madrid, Tecnología Electrónica, ETSIT, Ciudad Universitaria, Madrid, 28028, Spain
Michael Callahan
Affiliation:
[email protected], Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA, MA 01731, United States
E. Grant
Affiliation:
[email protected], Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA, MA 01731, United States
K. Rakes
Affiliation:
[email protected], Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA, MA 01731, United States
David Bliss
Affiliation:
[email protected], Air Force Research Laboratory, Sensors Directorate, Hanscom AFB, MA, MA 01731, United States
Buguo Wang
Affiliation:
[email protected], Solid State Scientific Corporation, Hollis, NH, NH 03049, United States
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Abstract

Vickers indentations of ZnO crystals grown by te hydrothermal method wer studied by cathodoluminescence. The plastic deformation induced defects, which have influence on the luminescence spectrum. The main changes in the luminescence response concern the generation of non radiative recombination centers, but also a band close to the first order phonon replica of the free exciton is observed to appear in the regions deformed by the indentation. Besides, deep levels are also generated. The result of this is a relative increase of the defect related bands respect to the dominant bound exciton emission.

Keywords

luminescencehydrothermaldefects
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 957: Symposium K – Zinc Oxide and Related Materials , 2006 , 0957-K06-03
Copyright
Copyright © Materials Research Society 2007

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