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Exciton localization in inhomogeneously broadened ZnO/MgxZn1−xO quantum wells

Ashrafi, Almamun

Description

Exciton localization in ZnO/MgxZn1−xOquantum wells(QWs) has been investigated systematically with various ZnO well widths for the fixed Mg0.23Zn0.77O barrier height. A strong exciton confinement is observed with an implicit dependence on the built-in electric field which is calculated to be 0.37 MV/cm. The exciton-phonon coupling strength varied significantly depending upon the degrees of exciton localization with the activation energy of 18–29 meV. The relaxation mechanism in...[Show more]

CollectionsANU Research Publications
Date published: 2010-06-25
Type: Journal article
URI: http://hdl.handle.net/1885/15545
Source: Journal of Applied Physics
DOI: 10.1063/1.3452379

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