Photoluminescence of ZnO : Tb nanoparticles

Terbium-doped zinc oxide nanoparticles have been prepared by hydrolyzing zi nc acetate and terbium acetate. Nanoparticle-matrix-facilitated photolumine scence which is related to Tb3+ ions has been observed for ZnO:Tb nanoparti cles. The dependence of emission intensity on doping concentration of Tb3ions has been investigated. An energy transfer from excited states of ZnO h osts to dopants is disclosed by the fact that the emission intensity of Tb3 + centers increases with increasing Tb content at the expense of emission f rom defect states in ZnO matrix.