Combustion synthesis and photoluminescence of Sr2MgSi2O7:Eu,Dy long lasting phosphor nanoparticles

Abstract SiO 2 and Si(OC 2 H 5 ) 4 were employed as the raw materials to synthesize blue long afterglow phosphor Sr 2 MgSi 2 O 7 :Eu,Dy via a combustion process with ultrasonic dispersing technique, respectively. The crystallization, particle sizes and luminescence properties of the samples have been investigated systematically by using powder X-ray diffraction, transmission electron microscopy, luminescence spectrophotometer and brightness meter. Compared with the phosphor obtained by employing SiO 2 as starting material, the phosphor powder prepared by using Si(OC 2 H 5 ) 4 has purer Sr 2 MgSi 2 O 7 phase, smaller particle size, and shorter wavelength of main peaks of excitation and emission spectra. Nanoparticles can be obtained by using Si(OC 2 H 5 ) 4 as starting material. The afterglow properties of the phosphors were also studied in this article.