Synthesis and optical characterization of Er-doped bismuth titanate nanoparticles grown by sol-gel hydrothermal method
Fuentes, Sandra (Centro para el Desarrollo de la Nanociencia y la Nanotecnología (Chile))
Muñoz, Pamela (Universidad Católica del Norte)
Llanos, Jaime (Universidad Católica del Norte)
Vega, Mauricio (Universidad Católica del Norte)
Martin, Inocencio R. (Universidad de La Laguna)
Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia)

Date:	2017
Abstract:	The Er-doped bismuth titanate (BiTiO, BIT) nanoparticles were synthesized by a combined sol-gel and hydrothermal method under a partial oxygen pressure of 30 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 30 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 =1480 nm) showed an enhancement of the infrared emission (980 nm) as Er concentration increased, achieving a maximum for 6% mol, while photoluminescence spectra (excitation wavelength =473 nm) showed a strong green emission (529 and 553 nm) with a maximum at 4% mol.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Oxide materials ; Sol-gel processes ; Hydrothermal ; Photoluminescence
Published in:	Ceramics international, Vol. 43, Issue 4 (March 2017) , p. 3623-3630, ISSN 0272-8842

DOI: 10.1016/j.ceramint.2016.11.200

Postprint 16 p, 190.5 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles