Facile synthesis of lanthanide vanadates and their luminescent properties

GdVO4:Eu3+, Bi3+ with tetragonal phase has been successfully synthesized by employing efficient irradiations. The assembly of composites with fine grains based on acoustic energy and microwave radiation requires low temperature (90 degrees C) and short reaction time (60 min). All the compounds exhibited red emissions and they can be sensitized through the doped Bi3+ ions. The dependence of pH changes and doping concentration on the fluorescence features has been discussed. The photoluminescence measurements show that the optical properties achieved the best results at pH = 9 for GdVO4:Eu3+(5 mol%), Bi3+(1 mol%) or pH = 7 for GdVO4:Eu3+. (C) 2015 Elsevier B.V. All rights reserved.