Jiangsu Province Key Laboratory of Precious Metal ChemistryandTechnology

Changzhou, China

Jiangsu Province Key Laboratory of Precious Metal ChemistryandTechnology

Changzhou, China
SEARCH FILTERS
Time filter
Source Type

He X.,Jiangsu Teachers University of Technology | He X.,Jiangsu Province Key Laboratory of Precious Metal ChemistryandTechnology | Guan M.,Jiangsu Teachers University of Technology | Guan M.,Jiangsu Province Key Laboratory of Precious Metal ChemistryandTechnology | And 8 more authors.
Journal of Materials Research | Year: 2011

A series of red-emitting phosphors with compositions of La 2(Mo1-zSiz)2O9:0. 05Eu3+ (0 ≤ z ≤ 0.10) with strong near-UV absorption were prepared by solid-state method. The structure and luminescence properties were investigated by x-ray powder diffraction, UV-vis diffuse reflectivity, and photoluminescence spectra. The luminescent properties as a function of Si 4+ concentrations were systematically studied. Under excitation of a wide range near-UV (250-430 nm) or blue light, Si4+-doped series phosphors exhibit characteristic red emission of Eu3+ peaked at 615 nm. The incorporation of Si4+ into La2Mo2O 9:0.05Eu3+ phosphor leads to the improvement of the excitation broad band and sharp peaks, as well as the broadening of charge transfer band. Appropriate amount of Si4+ doping can enhance the red luminescence intensity. Finally, the possible reasons for the luminescence enhancement via the corporation of Si4+ were explained. © 2011 Materials Research Society.

Loading Jiangsu Province Key Laboratory of Precious Metal ChemistryandTechnology collaborators
Loading Jiangsu Province Key Laboratory of Precious Metal ChemistryandTechnology collaborators