SrTiO3 crystalline nanoparticles were prepared
using
the microwave-assisted hydrothermal method at 140 °C with synthesis
times varying from 4 to 160 min. Sample characterization showed that
the method is effective in obtaining nanoparticles in a relatively
short time, which have the highest photoluminescence emission. The
crystalline phase of perovskite-type SrTiO3 is not significantly
influenced by synthesis time. However, the SrTiO3 phase
is already obtained with a 4 min synthesis time. Also, all samples
exhibited photoluminescence at room temperature in the blue-green
region, where intensity decreased with increasing synthesis time and
particle size. The samples synthesized with the shortest time showed
higher photoluminescence emission and smaller particle sizes. The
morphology obtained based on FE-SEM showed cubic nanoparticles with
inhomogeneous grain growth at higher temperatures of synthesis in
addition to the formation of new architectures.
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