期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 15, 期 12, 页码 2071-2079出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/15/12/324
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Porous anodic alumina (PAA) films with ordered nanopore arrays have been prepared by electrochemically anodizing aluminium in oxalic acid solutions, and the role of the oxalic impurities in the optical properties of PAA films has been discussed. Photoluminescence (PL) measurements show that the PAA films obtained have a blue PL band with a peak position at around 470 nm; the oxalic impurities, incorporated in the PAA films during the anodization processes and already existing in them, could be being transformed into PL centres and hence responsible for this PL emission.
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