Luminescence properties of Li2Ca2ScV3O12 and Li2Ca2ScV3O12:Eu3+ Synthesized by solid-state reaction method

Li2Ca2ScV3O12 and Eu3+ doped Li2Ca2ScV3O12 have been synthesized by a high temperature solid-state reaction method. The as-prepared compounds have the garnet-type structure by the X-ray diffraction (XRD) analysis. Li2Ca2ScV3O12 can be self-excited by the UV light ranging from 200 to 400 nm, and it shows the broad-band greenish yellow emission originating from the VO43- charge transition (CT), which contains two fitting bands with peaks at 510 nm and 569 nm, corresponding to the T-3(2 ->) Al and T-3(1 ->) (1)A(1), transitions of VO43-center dot Eu3+ doped Li2Ca2ScV3O12 phosphor shows characteristic broad-band emission of VO43- and the line-type emission of Eu3 in the red region, which exhibits yellow emission upon the 365 nm UV light. The CIE coordinates and the lifetimes of the samples have been also investigated. (C) 2013 Elsevier B.V. All rights reserved.