Eu3+ Photoluminescence in CaYTiNbO7 Pyrochlore: A Promising Orange-Red Phosphor for White-Light-Emitting Diodes

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Eu3+ Photoluminescence in CaYTiNbO7 Pyrochlore: A Promising Orange-Red Phosphor for White-Light-Emitting Diodes

Year : 2017

Publisher : Wiley-Blackwell

Source Title : ChemistrySelect

Document Type :

Abstract

CaY1-xEuxTiNbO7 compositions with pyrochlore structure were synthesized by solid state reaction technique and photoluminescence was studied. Photoluminescence emission results reveal that the 5D0→7F1 magnetic dipole transition has higher intensity indicating that Eu3+ occupies a centrosymmetric site in the host lattice. The critical concentration of Eu3+ was found to be x=0.5. The CaY0.5Eu0.5TiNbO7 phase shows higher orange-red emission when compared to that of commercial red phosphor, Y2O3:Eu3+.