Improved luminescence of Y2MoO6:Eu3+ by doping Li+ ions for light-emitting diode applications

The photoluminescence (PL) property of Y2MoO6:Eu3+ doped with Li+ is investigated in this paper. The red luminescence of Eu3+ in Y2MoO6 lattice has greatly enhanced by codoping monovalent alkali metal ions Li+ into the lattice. The drastic increase in the luminescence intensity of Y2-xLixMoO6:Eu3+ originates from the reason that the Li+ ions may serve as a self-promoter for better crystallization to reduce the defect or as a lubricant for the complete incorporation of the Eu3+ ions into the Y2MoO6 host. (C) 2012 Published by Elsevier B.V.