Luminescence of In2S3 nanocrystallites embedded in sol–gel silica xerogel

Abstract In2S3 nanoparticles embedded in a novel porous phosphor silica xerogel have been synthesized by sol–gel processing. Their fluorescence properties have been evaluated and compared with those of the undoped xerogel. A novel luminescent phenomenon has been observed from In2S3 nanoparticles embedded in the sol–gel silica xerogel. The photoluminescence (PL) of all the doped samples shows high fluorescence intensities. The PL spectrum of the doped samples consists of two emission peaks: one is at 440 nm while the other is at 600 nm. The In3+ ions in the sol–gel silica xerogel show sharp emission band.