Photoluminescence of porous anodic alumina films with terbium incorporated by dipping

Luminescent structures based on porous anodic alumina (PAA) of (3...50) mum thickness, comprising trivalent terbium ions within the pore channels, have been synthesised by dipping in salt solutions with the following thermal treatment at (200...600)degC. The photoluminescence of the structures has been examined. It has been revealed that luminescence intensity increases with the increase of PAA thickness. However, the maximum anisotropy of luminescence along the pore channels has been observed for PAA of 10 mum thickness.