| Rare earth element has excellent optical, electrical and magnetic properties dueto its unique electronic structure. Recently, the rare earth luminescent materials whichuse rare earth element as the activator or the host materials have been widely appliedto lighting, display, communication, medical treatment and other areas. Common rareearth element activators mainly include Eu3+, Eu2+, Tb3+, Dy3+and Sm3+. The Eu3+ion have drawn widely attention for its characteristics such as narrow emission band,high emission intensity and so on.In this paper, Eu3+doped yttrium oxide red luminscent particles weresynthesized by hydrothermal method and annealing process. Y2O3:Eu3+-benzoic acid(Y2O3:Eu3+-BA) and Y2O3:Eu3+-thenoyltrifluoroacetone (Y2O3:Eu3+-TTA) weresynthesized by a simple mixing and standing method. The sensitization effect oforganic ligands on Eu3+ions was investigated. It was found that the organic ligandscan significantly enchance the luminescence property for the ultraviolet regionexcitation light. In addition, the competition between the excitation broad bandswhich formed by the same charge transfer mechanism has been found.At the same time, Eu3+ions were doped into the Y2O3particles by a newion-exchange method. The study found that the Eu3+ions were more close to theparticle surface via the new doping method. It benefits the interaction between theEu3+ions and ligand functional groups. |
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