Effects of Anodic Oxidation Process on Transmittance of Porous Alumina on Glass Substrate

Abstract:

Aluminum films were deposited on glass substrate by electron beam heat evaporation, and porous alumina films with high transmittance were prepared by means of anodic oxidation under different anodizing conditions in oxalic acid solution or phosphoric acid solution respectively. Thus the morphology of these porous alumina films was characterized by different structural. he optical transmittance spectrum at normal incidence over the 300~1000nm spectra region were obtained by spectrophotometer, which shows, in visible and ultraviolet light region, the transmittance of porous alumina films prepared in oxalic acid solution is much better than that prepared in phosphoric acid solution. The SEM analysis results showed that the pores are circular and uniform in porous alumina prepared in oxalic acid but irregular and non-uniform in that prepared in phosphoric acid, which affected the surface roughness of alumina films.

• Periodical: Advanced Materials Research (Volumes 179-180)
• Pages: 274-278
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.179-180.274
• Online since: January 2011
• Authors: Pei Tao Guo, Zhi Lin Xia, Yi Yu Xue, Li Xin Zhao, Rui Wu
• Keywords: Anodic Oxidation, Glass Substrate, Morpholoy, Optical Property, Porous Alumina

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DOI: 10.1016/j.apsusc.2009.08.056