Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 136, Issue 1, Pages 205-209Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2012.06.053
Keywords
ZnO:Al; Sputtering; Thin film; rf power; O-vacancies; Al-interstitials
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Aluminum doped zinc oxide ZnO:Al thin films were prepared using rf magnetron sputtering. The preparation was performed at room temperature and low pressure with varying rf power between P = 50 W and P = 500 W. Structural, electrical and optical film properties were studied depending on rf power. Special attention was paid to correlations among film structure, sheet resistance and optical transmission. Films with largest crystallite size exhibited highest optical transmission, but not lowest electrical resistivity. An explanation for this finding was sought in terms of the amount of Al atoms incorporated in the films and the places they occupy, parameters which are in turn related to rf power. (c) 2012 Elsevier B.V. All rights reserved.
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