Author/Authors :
Peng، نويسنده , , Mingying and Pei، نويسنده , , Zhiwu and Hong، نويسنده , , Guangyan and Su، نويسنده , , Qiang، نويسنده ,
Abstract :
Compounds of Sr4Al14O25: Eu were prepared in air atmosphere by high temperature solid state reaction. The reduction of Eu3+→Eu2+ was firstly observed in the aluminate phosphor of Sr4Al14O25: Eu synthesized in air condition. This made aluminate a new family and Sr4Al14O25 a new member of compounds in which Eu3+ ion could be reduced to Eu2+ form when fired in air atmosphere. The reduction of Eu3+→Eu2+ in Sr4Al14O25: Eu was explained by means of a charge compensation model. Experiments based on the model were designed and carried out, and the results supported this model.
