Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5438910 | Ceramics International | 2017 | 8 Pages |
Abstract
The Er3+-doped bismuth titanate (Bi4Ti3O12, BIT) nanoparticles were synthesized by a combined sol-gel and hydrothermal method under a partial oxygen pressure of 30Â bar. The composition and morphology were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman scattering. They showed pure and homogeneous spherical BIT nanoparticles with a size below the 30Â nm. The incorporation of Er ions showed a strong decrease in the lattice parameters, as well as averaged particle size. The photoluminescence up-conversion (excitation wavelength =1480Â nm) showed an enhancement of the infrared emission (980Â nm) as Er concentration increased, achieving a maximum for 6% mol, while photoluminescence spectra (excitation wavelength =473Â nm) showed a strong green emission (529 and 553Â nm) with a maximum at 4% mol.
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Authors
S. Fuentes, P. Muñoz, J. Llanos, M. Vega, I.R. Martin, E. Chavez-Angel,