Photoluminescence of the yttrium aluminum composites doped with various concentrations of terbium

The composites with various terbium concentrations are synthesized in the silicon-based porous anodic alumina by the coprecipitation method from solutions of yttrium, aluminum and terbium nitrates. The photoluminescence of these structures is investigated. It is found that the yttrium aluminum composite obtained from the solution with terbium concentration 0.1 mol.% demonstrates the most intensive photoluminescence in the green range. The terbium related photoluminescence intensity decreases with a further increase in the concentration of terbium.