The majority of the studies about photoluminescence had been carried out with crystalline materials, whose emission occurs at cryogenic temperatures, limiting the application of these materials. In turn, some amorphous solids, as titanates, tungstates, zirconates, among others, present photoluminescence at room temperature, seemed with silicon. This discovery led to the necessity of developing new models to explain the behavior of these materials. This revision intends to elucidate the results on photoluminescence, using a theoretical-experimental treatment, on the basis of the recent researches of this property in amorphous oxides.
photoluminescence; titanate; amorphous oxides; energy gap
