Tuning Optical Properties of Photonic Crystal of Anodic Alumina and the Influence of Electrodeposition

In this paper, the tuning optical properties in a photonic crystal of an anodic alumina were investigated together with the influence of the metal electrodeposition on the photonic crystal with an Al substrate. The transmission spectra of the photonic crystal show the redshift of the transmission dip with increasing anodic voltage and the blueshift of the color with observable angles obeying the Bragg law. The electrodeposited metal layer strongly absorbs the reflecting light from the Al substrate, and it makes the photonic crystals with an Al substrate show vivid colors. (C) 2009 The Electrochemical Society. [DOI: 10.1149/1.3223992] All rights reserved.