Volume 39, Number 3, July I 1997
|Page(s)||311 - 316|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Physical origin of the intrinsic cathodic luminescence of an oxide-covered aluminium electrode
Department of Physics, University of Turku - FIN-20014 Turku, Finland
2 Department of Chemistry, University of Turku - FIN-20014 Turku, Finland
Accepted: 22 June 1997
Photoluminescence spectra of thin-film aluminium oxide samples on aluminium show spectral lines at ca. 330 and 420 nm that are attributed to the F+ and F centers of aluminium oxide, respectively. Experimental results reveal that the F centers are responsible for the intrinsic cathodic luminescence of an oxide-covered aluminium electrode, too. The mechanism of the luminescence is based on charge transfer reactions at the oxide/electrolyte interface.
PACS: 73.50.Yg – Other thin film transport-related topics / 73.61.Ng – Insulators / 78.60.Hk – Cathodoluminescence, ionoluminescence
© EDP Sciences, 1997
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