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Nanomaterials 2018, 8(1), 20; https://doi.org/10.3390/nano8010020

Design, Synthesis, and Structure-Property Relationships of Er3+-Doped TiO2 Luminescent Particles Synthesized by Sol-Gel

1
Dipartimento di Scienza Applicata e Tecnologia (DISAT) and INSTM UdR Torino Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
2
Istituto Superiore Mario Boella, Via P. C. Boggio 61, 10138 Torino, Italy
3
CE.RI.COL., Colorobbia Research Center, Via Pietramarina 53, 50053 Sovigliana-Vinci (FI), Italy
4
Laboratory of Photonics, Tampere University of Technology, Korkeakoulunkatu 3, 33720 Tampere, Finland
5
nLIGHT Corporation, Sorronrinne 9, 08500 Lohja, Finland
6
IFN–CNR, CSMFO Lab., Via alla Cascata 56/C, 38123 Povo (TN), Italy
*
Author to whom correspondence should be addressed.
Received: 31 October 2017 / Revised: 22 December 2017 / Accepted: 28 December 2017 / Published: 2 January 2018
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Abstract

Titania particles doped with various concentrations of Erbium were synthesized by the sol-gel method followed by different heat treatments. The shape and the grain growth of the particles were noticeably affected by the concentration of Erbium and the heat treatment conditions. An infrared emission at 1530 nm, as well as green and red up-conversion emissions at 550 and 670 nm, were observed under excitation at 976 nm from all of the synthesized particles. The emission spectra and lifetime values appeared to be strongly influenced by the presence of the different crystalline phases. This work presents important guidelines for the synthesis of functional Er3+-doped titania particles with controlled and tailored spectroscopic properties for photonic applications. View Full-Text
Keywords: erbium-doped titania; sol-gel synthesis; photoluminescence erbium-doped titania; sol-gel synthesis; photoluminescence
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Lopez-Iscoa, P.; Pugliese, D.; Boetti, N.G.; Janner, D.; Baldi, G.; Petit, L.; Milanese, D. Design, Synthesis, and Structure-Property Relationships of Er3+-Doped TiO2 Luminescent Particles Synthesized by Sol-Gel. Nanomaterials 2018, 8, 20.

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