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Article

Er-Doped Nanostructured BaTiO3 for NIR to Visible Upconversion

1
NSC Nanosono SA, R&D Corporation, Hakidma 7, Yokneam industrial Park 2069200, Israel
2
Department of Chemistry, Faculty of Science, University of Chile, Las Palmeras 3425, Ñuñoa, Santiago 780003, Chile
3
Department of Materials Science, Faculty of Physical and Mathematics Sciences, University of Chile, Beauchef 850, Santiago 837048, Chile
4
Department of Organic Chemistry and Physical Chemistry, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Sergio Livingstone 1007, Independencia, Santiago 8380492, Chile
*
Author to whom correspondence should be addressed.
Materials 2018, 11(10), 1950; https://doi.org/10.3390/ma11101950
Received: 4 July 2018 / Revised: 11 August 2018 / Accepted: 16 August 2018 / Published: 12 October 2018
(This article belongs to the Special Issue Photothermal Therapy of Nanomaterials)
Photoluminescent mechanisms in erbium-doped barium titanate nanoparticle systems were studied. Er3+ ions were introduced into the BaTiO3 lattice by the sol-gel method. The resulting Er3+ concentration was between 0% and 5%, with Ba/Ti ratios of 1.008 and 0.993. The stoichiometry of Ba and Ti concentrations in the lattice influenced the doping mechanism and placement of erbium ions in the lattice structure. Our research shows the existence of a strong correlation between Ba/Ti ratios, erbium concentration, phase structure and doping site location on the upconversion photoluminescence mechanisms. Competing upconversion emissions 2H11/2/4S3/24I15/2 at 523 and 548 nm respectively and other photoluminescent mechanisms as 4I9/24I11/2 around 4000 nm (2500 cm−1) were studied using Raman and emission spectroscopy. The upconversion process is predominant over other photoluminescent decay when the material presents high distortion in the surrounding activator. View Full-Text
Keywords: upconversion; photoluminescent; nanoparticle; Barium Titanate; Erbium upconversion; photoluminescent; nanoparticle; Barium Titanate; Erbium
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MDPI and ACS Style

Meneses-Franco, A.; Campos-Vallette, M.; Vásquez, S.O.; Soto-Bustamante, E.A. Er-Doped Nanostructured BaTiO3 for NIR to Visible Upconversion. Materials 2018, 11, 1950. https://doi.org/10.3390/ma11101950

AMA Style

Meneses-Franco A, Campos-Vallette M, Vásquez SO, Soto-Bustamante EA. Er-Doped Nanostructured BaTiO3 for NIR to Visible Upconversion. Materials. 2018; 11(10):1950. https://doi.org/10.3390/ma11101950

Chicago/Turabian Style

Meneses-Franco, Ariel, Marcelo Campos-Vallette, Sergio O. Vásquez, and Eduardo A. Soto-Bustamante 2018. "Er-Doped Nanostructured BaTiO3 for NIR to Visible Upconversion" Materials 11, no. 10: 1950. https://doi.org/10.3390/ma11101950

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