Relationship between crystal shape, photoluminescence, and local structure in SrTiO3 synthesized by microwave-assisted hydrothermal method
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2012
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This paper describes the effect of using different titanium precursors on the synthesis and physical properties of SrTiO3 powders
obtained by microwave-assisted hydrothermal method. X-ray diffraction measurements, X-ray absorption near-edge structure
(XANES) spectroscopy, field emission scanning electron microscopy (FE-SEM), and high-resolution transmission electron
microscopy (HRTEM) were carried out to investigate the structural and optical properties of the SrTiO3 spherical and cubelikeshaped
particles. The appropriate choice of the titanium precursor allowed the control of morphological and photoluminescence
(PL) properties of SrTiO3 compound. The PL emission was more intense in SrTiO3 samples composed of spherelike particles. This
behavior was attributed to the existence of a lower amount of defects due to the uniformity of the spherical particles.
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SILVA, Luís F. da; AVANSI, Waldir; MOREIRA, Mário L.; MESQUITA, Alexandre; MAIA, Lauro J. Q.; ANDRES, Juan; LONGO, Elson; MASTELARO, Valmor R. Relationship between crystal shape, photoluminescence, and local structure in SrTiO3 synthesized by microwave-assisted hydrothermal method. Journal of Nanomaterials, London, v. 2012, e890397, 2012.