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Structural tuning of photoluminescence in nanoporous anodic alumina by hard anodization in oxalic and malonic acids

Abel Santos, Maria Alba, Mahbubur M Rahman, Pilar Formentín, Josep Ferré-Borrull, Josep Pallarès and Lluis F Marsal*

Departament d’Enginyeria Electrònica, Elèctrica i Automàtica, Universitat Rovira i Virgili, Avda. Països Catalans 26, Tarragona, 43007, Spain

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Nanoscale Research Letters 2012, 7:228  doi:10.1186/1556-276X-7-228

Published: 19 April 2012

Additional files

Additional file 1:

Table S1 Average percentage content of Aluminium (Al), Oxygen (O) and carbon (C) of samples HA-Ox1.1-HA-Ox1.4 and HA-Ml1.1-HA-Ml1.4 after EDXS analysis. The elemental qualitative analysis was performed on the HA side of each NAAM at three different areas. Figure S1. Illustration of the resulting nanoporous anodic alumina structure and the current density and voltage-time transients (i.e. J-t and V-t) corresponding to the one-step hard anodization in oxalic and malonic acids. (a) and (b) oxalic acid. (c) and (d) malonic acid. Figure S2. Voltage and current density-time (J-t) transient recorded during the pore opening process and illustrations of the pore structure related to each stage of this process for a NAAM fabricated in oxalic ((a) and (b)) and in malonic ((c) and (d)) acids. Figure S3. Carbon content of samples HA-Ox1.1-HA-Ox1.4 and HA-Ml1.1-HA-Ml1.4 as a function of the hard anodization voltage (VHA) after EDXS analysis. Figure S4. Collapse of NAAMs fabricated in malonic acid after 30 ((a)) and 45 ((b)) min of pore widening in H3PO4 5 wt% at 35ºC (scale bar = 2 μm). Figure S5. Digital photography of two NAAMs fabricated in oxalic and malonic acid (scale bar = 20 mm)

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