A host sensitized reddish-orange Gd2MoO6:Sm3+ phosphor for light emitting diodes

An intense reddish-orange phosphor, Gd2MoO6:Sm3+, was developed by solid state chemistry. The photoluminescence excitation and emission spectra, concentration effect are investigated. The results show an efficient energy transfer from MoO66- group to Sm3+ occurs and Sm3+ ion emits an intense reddish-orange light with high color purity and an excellent reproduction quality of optical properties. These results demonstrate that Sm3+ ion with low 4f-4f absorption efficiency in near ultraviolet region can play a role of activator in narrow reddish-orange emitting phosphor potentially useful in similar to 370 nm GaN-based light emitting diode through efficient energy feeding by charge transfer absorption of MoO66- group. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3557065]