Hydrothermal synthesis, morphology and photoluminescence of hexagonal SrSiO3:Eu2+ micro-octahedrons and prism-like hollow microstructures

In this paper, we investigated the structure, morphology and photoluminescence properties of hexagonal SrSiO3:Eu2+ micro-octahedrons and prism-like hollow microstructures prepared by the hydrothermal method at a relatively low temperature (180 °C). Reactant concentration and reaction time showed strong effects on the phase formation and morphology of the products. The prepared samples were systematically characterized by X-ray diffraction, energy dispersive X-ray spectrometry, field emission scanning electron microscopy, excitation and emission photoluminescence (PL). The possible formation mechanisms of these SrSiO3:Eu2+ microcrystals were proposed. Finally, the PL properties of SrSiO3:Eu2+ microcrystals were also investigated.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Hexagonal SrSiO3:Eu2+ microcrystals were prepared via a hydrothermal method. ► The effects of the synthesis conditions on the product microstructures are studied. ► The possible formation mechanism of the SrSiO3:Eu2+ microcrystals is proposed. ► The luminescent properties of the SrSiO3:Eu2+ microcrystals are investigated.