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New insights into the luminescent properties of Na stabilized Ga – Ti oxides homologous series

Abstract

Herein, we achieve the synthesis and structural study of luminescent Na-stabilized Ga-Ti oxides homologous series by atomically resolved electron microscopy. Relevant optical properties as a function of the titanium content have been revealed. In particular, excitation and emission bands change with the series term, showing wide tunability of the luminescence bands, ranging from the ultraviolet to the infrared. First principles studies of these structures have been done in the framework of the density functional theory (DFT) to understand the optical properties. A good agreement with the experimental measurements for the three synthesized terms has been obtained from the compositional and occupancy of crystallographic sites perspective, as well as from the energy bands structure point of view. This work paves the way to explore further the capabilities of tuning electronic and optical properties into a variety of application fields.

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Supplementary files

Article information


Submitted
07 Oct 2019
Accepted
13 Jan 2020
First published
15 Jan 2020

J. Mater. Chem. C, 2020, Accepted Manuscript
Article type
Paper

New insights into the luminescent properties of Na stabilized Ga – Ti oxides homologous series

J. García-Fernández, M. García-Carrión, A. Torres-Pardo, R. Martinez-Casado, J. Ramirez-Castellanos, E. Nogales, J. M. Gonzalez-Calbet and B. Mendez, J. Mater. Chem. C, 2020, Accepted Manuscript , DOI: 10.1039/C9TC05472C

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