Abstract

ZnO thin films deposited on various substrates were characterized by slow positron implantation spectroscopy (SPIS) combined with X-ray diffraction (XRD). All films studied exhibit wurtzite structure and crystallite size 20–100 nm. The mosaic spread of crystallites is relatively small for the films grown on single crystalline substrates while it is substantial for the film grown on amorphous substrate. SPIS investigations revealed that ZnO films deposited on single crystalline substrates exhibit significantly higher density of defects than the film deposited on amorphous substrate. This is most probably due to a higher density of misfit dislocations, which compensate for the lattice mismatch between the film and the substrate.

Details

Title
Defect studies of ZnO films prepared by pulsed laser deposition on various substrates
Author
Melikhova, O 1 ; J &Ccheck;ízek 1 ; Procházka, I 1 ; Kuzel, R 1 ; Novotný, M 2 ; Bulír, J 2 ; Lancok, J 2 ; Anwand, W 3 ; Brauer, G 3 ; Connolly, J 4 ; McCarthy, E 4 ; Krishnamurthy, S 4 ; J-P Mosnier 4 

 Charles University in Prague, Faculty of Mathematics and Physics, V Holesovickách 2, 180 00 Prague 8, Czech Republic 
 Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague, Czech Republic 
 Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf Postfach 510119, D-01314, Dresden, Germany 
 National Centre for Plasma Science and Technology, School of Physical Sciences, Glasnevin, Dublin 9, Ireland 
Publication year
2013
Publication date
Jun 2013
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2585294052
Copyright
© 2013. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.