The present paper reports on the effect of Eu 3+ concentration (1-5%, considering a charge compensation mechanism) on the structural, morphological and spectroscopic properties of Ba 2 SiO 4 produced by using a novel approach that involves an adapted sol-gel route. XRD data showed that high crystalline and single phase doped Ba 2 SiO 4 samples were prepared at lower calcination temperature (1100 C) compared to the standard solid-state method ($1300 C occupying ordinary host lattice sites. Finally, the 4%-doped sample exhibited the highest relative emission intensity while the 5%-doped, the highest quantum efficiency (72.6%) which qualifies these materials as potential candidates to be used as red phosphors for solid state lightning.

This work reports on the sol–gel synthesis of barium- and europium-doped silica xerogel and its use as an electrocatalytic sensor.