2022-Sustainable Industrial Processing Summit
SIPS2022 Volume 1
Alario-Franco Intl. Symp
Solid State Chemistry
| Editors: | F. Kongoli, F. Marquis, S. Kalogirou, B. Raveau, A. Tressaud, H. Kageyama, A. Varez, R. Martins. |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2022 |
| Pages: | 154 pages |
| ISBN: | 978-1-989820-34-6 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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“Fluoroperovskites and other Fluoride Materials for Applications in Energy, Electronics, Photonics and Sustainable Issuesâ€
Alain Tressaud1;1ICMCB-CNRS, UNIVERSITY BORDEAUX, Pessac, France;
Type of Paper: Regular
Id Paper: 506
Topic: 52
Abstract:
Solid-state inorganic fluorides are present today as components in many advanced technologies, including energy storage and conversion, microphotonics, fluorescent chemical sensors, solid-state lasers, nonlinear optics, nuclear cycle, superhydrophobic coatings, etc. Most of these outstanding properties can be correlated to the exceptional electronic properties of element fluorine “F2â€, yielding almost unique types of bonding with the other elements [1].
The strategic importance of Solid-state inorganic fluoride materials will be illustrated by some examples taken from various fields.:
- Use of fluoride materials as electrodes in Li-ion batteries and in catalysis;
- Nanocrystalline metal fluorides derived from fluorite- (CaF2) or tysonite- (LaF3) types with high F--anionic conductivity and used as solid electrolytes in F- ion-based all-solid-state batteries.
- Fluorides in photonics: luminescence, up- and down-conversion, frequency-doubling fluorides and solid-state lasers ;
- Multiferroics based on d-transition metal fluorides derived from the perovskite, i.e. layered BaMF4 or TTB-K3Fe5F15, in which magnetism and ferroelectricity coexist.
- F-doped SnO2 for photo-voltaic applications exhibiting a rather good transparency in the visible range and high infrared absorption associated to its conductivity due to n-type charge carriers
-Perovskite-related solid-state fluorides based on d-transition metals exhibit a huge variety of structural and magnetic behaviors. Layered BaMF4 and iron fluorides (TTB- K3Fe5F15), are important families of multiferroics,
-Intercalated fluoride ion in several networks of oxides allowing to tune the transition metal oxidation state. F-based superconductors created by F-doping in cuprate systems La2CuO4 and Sr2CuO3 or in F-doped oxypnictide LnFePnO1-xFx (Tc ~58 K)
- Finally, nanoparticles of solid-state inorganic fluorides are used in many advanced domains such as dye-sensitized solar cell (DSSC), transparent conducting films (TCF), solid state lasers, nonlinear optics (NLO), up- and down-conversion luminescence, UV absorbers, frequency doubling. Their role is decisive in medicine and biotechnologies, where nano-crystals of doped rare-earth fluorides can be used as theranostic nano-agents that integrate imaging probes and therapeutic and are therefore able to perform both therapy and diagnostic within a single nano-object.
References:
[1] “Progress in Fluorine Scienceâ€, A. Tressaud Series Editor, Elsevier, Vol. 1 –“Photonic & Electronic Properties of Fluoride Materialsâ€, A.Tressaud & K. Poeppelmeier
Eds. (2016). // Vol. 2 – “New Forms of Fluorinated Carbonsâ€, O. Boltalina & T. Nakajima, Eds. (2016). // Vol. 3 – “Modern Synthesis Processes and Reactivity of Fluorinated Compoundsâ€, H. Groult, F. Leroux & A. Tressaud, Eds. (2017). // Vol. 4 – “Fluorine & Health: Pharmaceuticals, Medicinal Diagnostics, and Agrochemicalsâ€, G. Haufe, & F. Leroux Eds. ( 2018). // Vol. 5 – “Fluorine, a Paradoxical Elementâ€, A. Tressaud, (2019).