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Stoichiometry enhanced exciton-phonon interactions in ZnO epilayers

Ashrafi, Abm (Almamun)


Stoichiometry enhanced exciton-phonon couplings have been studied in ZnO epilayers grown on Al2O3 substrates by pulsed laser deposition. Rutherford backscattering spectroscopy indicated the stoichiometry, while clear hexagonal morphology revealed the Zn-polar growth of ZnO epilayers. From these high-quality and single-crystalline ZnO epilayers free-exciton emissions were observed at 3.30-3.31 eV with a low resistivity of ≤10 -2 Ω cm. Theoretical models were considered for fitting the...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Journal of Physics D: Applied Physics
DOI: 10.1088/0022-3727/41/19/195415


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