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Impact of Mg content on native point defects in MgxZn1-xO (0 ≤ x ≤ 0.56)

Author
Perkins, J.; Foster, G. M.; Myer, M.; Mehra, S.; Chauveau, J. M.; Hierro, A.; Redondo-Cubero, A.; Windl, W.; Brillson, L.J.
Entity
UAM. Departamento de Física Aplicada
Publisher
American Institute of Physics Inc.
Date
2015-06-01
Citation
10.1063/1.4915491
APL Materials 3.6 (2015): 062801
 
 
 
ISSN
2166-532X (online)
DOI
10.1063/1.4915491
Funded by
The authors gratefully acknowledge National Science Foundation, Grant No. DMR-1305193 (Charles Ying and HaiyanWang), for support of this work.W.W. acknowledges partial funding from the Center for Emergent Materials, an NSF MRSEC (DMR 1420451) and AFOSR, Award # FA9550-14-1-0322. A.R.-C. acknowledges Juan de la Cierva program under Contract No. JCI-2012-14509 (Spain)
Project
Gobierno de España. JCI-2012-14509
Editor's Version
http://dx.doi.org/10.1063/1.4915491
Subjects
Mg content; Native point defects; Física
URI
http://hdl.handle.net/10486/678034
Rights
© 2015 Author(s)

Abstract

We used depth-resolved cathodoluminescence spectroscopy and surface photovoltage spectroscopy to measure the densities, energy levels, and spatial distributions of zinc/magnesium cation and oxygen vacancies in isostructural, single-phase, non-polar MgxZn1-xO alloys over a wide (0 ≤ x ≤ 0.56) range. Within this wide range, both defect types exhibit strong Mg content-dependent surface segregation and pronounced bulk density minima corresponding to unit cell volume minima, which can inhibit defect formation due to electrostatic repulsion. Mg in ZnO significantly reduces native defect densities and their non-polar surface segregation, both major factors in carrier transport and doping of these oxide semiconductors
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Google™ Scholar:Perkins, J. - Foster, G. M. - Myer, M. - Mehra, S. - Chauveau, J. M. - Hierro, A. - Redondo-Cubero, A. - Windl, W. - Brillson, L.J.

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  • Producción científica en acceso abierto de la UAM [15085]

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