Excitation of anodized alumina films with a light source

Martin Aggerbeck, Stela Canulescu, K. Rechendorff, Jørgen Schou, Rajan Ambat

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Abstract

Optical properties of anodized aluminium alloys were determined by optical diffuse reflectance spectroscopy of such films. Samples with different concentrations of dopants were excited with a white-light source combined with an integrating sphere for fast determination of diffuse reflectance. The UV-VIS reflectance of Ti-doped anodized aluminium films was measured over the wavelength range of 200 nm to 900 nm. Titanium doped-anodized aluminium films with 5-15 wt% Ti were characterized. Changes in the diffuse light scattering of doped anodized aluminium films, and thus optical appearance, with doping are discussed. Using the Kubelka-Munk model on the diffuse reflectance spectra of such films, the bandgap Eg of the oxide alloys can be determined.
Original languageEnglish
Publication date2012
Number of pages1
Publication statusPublished - 2012
Event8th International Conference on Photon-Excited Processes and Apllication (IPECA 2012) - Rochester, NY, United States
Duration: 12 Aug 201217 Aug 2012
http://www.optics.rochester.edu/icpepa8/index.html

Conference

Conference8th International Conference on Photon-Excited Processes and Apllication (IPECA 2012)
Country/TerritoryUnited States
CityRochester, NY
Period12/08/201217/08/2012
Internet address

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