Luminescent materials
S. Jobic (DR), P. Deniard (DR), E. Faulques (DR), H. Brault (MC), C. Latouche (MC), R. Gautier (CR), F. Massuyeau (IE), Romain Génois (Student).
A luminescent material emits light after its excitation by any source other than heat (e.g. UV radiation, electron beam, pressure, etc). In that context, we can distinguish fluorescent materials with lifetimes of the excited state ranging approximately between 10-9 and 10-3 s and materials with long persistent luminescence (also called phosphorescence) that have the propensity to emit light for several minutes or hours after cessation of the excitation. In both cases, we are interested in the characterization of the physical phenomenon, the determination of its origin and its adaptability to the target application. In a non-exhaustive manner, the materials synthesized at the laboratory are oxides, silicates, aluminosilicates or sulphides, in the form of micrometric powders or nanoparticles. Besides luminescence in the visible, we focus more and more on materials with emission in the infra-red domain.
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| Light emission of five phosphorescent materials under UV excitation left column) and once the excitation is off (recording every 5 ') |
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| Luminescence of the material (Ba, Sr) 13Al22Si10O66: Eu as a function of the rate of Sr |
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| CdSe quantum dots time-resolved photoluminescence |
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| Evolution of the photoluminescence of SrAl2O4: Eu when the ratio Eu2+: Eu3+ is controlled |
Involved people
Current: S. Jobic (DR), P. Deniard (DR), E. Faulques (DR), H. Brault (MC), C. Latouche (MC), R. Gautier (CR), F. Massuyeau (IE), R. Génois (Student)
Past: F. Clabau, G. Denis, G. Behr
Publications
Fine-Tuning the Properties of Doped Multifunctional Materials by Controlled Reduction of Dopants
H. Barroux, T. Jiang, C. Paul, F. Massuyeau, R. Génois, E. E. Gordon, M. Whangbo, S. Jobic, R. Gautier
Chemistry A European Journal, Accepted, 2017
Two-Step Design of a Single-Doped White Phosphor with High Color Rendering
R. Gautier, X. Li, Z. Xia, F. Massuyeau,
Journal of the American Chemical Society, 139 (4), 1436-1439, 2017
Oxygen-vacancy-induced midgap states of the inverse spinel Mg(Mg,Sn)O4 responsible for its white and near infrared phosphorescence and up-conversion photo-induced luminescence
G. Behrh, M. Isobe, F. Massuyeau, Hélène Serier-Brault, E. E. Gordon, H-J. Koo, M-H. Whangbo, R. Gautier, S. Jobic
In press, 2017
Synthesis and photoluminescence properties of Ca2Ga2SiO7:Eu3+ red phosphors with intense 5D0 ® 5F4 transition
G. Kaur Behrh, R. Gautier, C. Latouche, S. Jobic, H. Serier-Brault
Inorg. Chem., 55, 9144-9146, 2016
A chemical route towards single-phase materials with controllable photoluminescence
G. K. Behrh, H. Serier-Brault, S. Jobic, R. Gautier
Angew. Chem. Int. Ed., 127, 11663-11665, 2015
Preparation of Thin Films of Perovskite-type YAlO3:Gd3+-Pr3+ UV Phosphors
Y. Shimizu, K. Ueda, F. Massuyeau, S. Jobic
Thin Solid Film, 571, 90-93, 2014
Temperature and size dependence of time-resolved exciton recombination in ZnO quantum dots,
I. Musa, F. Massuyeau, L. Cario, J. L. Duvail, S. Jobic, P. Deniard, and E. Faulques, Appl. Phys. Lett. 99, 243112 (2011)
Mapping emissive channels of quantum dots: Influence of size and environment on energy transfer in the time domain,
E. Faulques, F. Massuyeau, Q. Wang,D.K. Seo, S. Jobic, Applied Physics Letters, 97, 153111 (2010).
Site preference of Eu2+ dopants in (Ba,Sr)13-xAl22-2xSi10+2xO66 phosphor and its effect on the luminescence properties: Density functional investigation,
G. Denis, X. Rocquefelte, P. Deniard, M-H. Whangbo, S. Jobic, J. Mater. Chem., 19, 9170-9175, 2009
Structure and white luminescence of Eu activated (Ba,Sr)13‑xAl22‑2xSi10+2xO66 materials
G. Denis, P. Deniard, E. Gautron, F. Clabau, A. Garcia, S. Jobic
Inorg. Chem., 47, 4226-4235, 2008
Fluorescence and phosphorescence properties of the low temperature forms of the MAl2Si2O8:Eu2+ (M=Ca, Sr, Ba) compounds
F. Clabau, A. Garcia, P. Bonville, D. Gonbeau, T. Le Mercier, P. Deniard, S. Jobic
J. Solid State Chem., 181, 1456-1461, 2008
Formulation of phosphorescence mechanisms in inorganic solids based on a new model of defect conglomeration
F. Clabau, X. Rocquefelte, T. Le Mercier, P. Deniard, S. Jobic, M. Whangbo
Chem. Mater, 18, 3212-3220, 2006
Mechanism of phosphorescence appropriate for the long lasting phosphors Eu2+ doped SrAl2O4 with co-dopants Dy3+ and B3+,
F. Clabau, X. Rocquefelte, S. Jobic, P. Deniard, M.-H. Whangbo, A. Garcia, T. Le Mercier, Chem. Mater., 17, 3904-3912, 2005
Collaborations
- Institut de Chimie de la Matière Condensée de Bordeaux
- Laboratoire Onde et Matière, Bordeaux
- North Carolina State University, Raleigh (USA)
- Université de Sofia (Bulgarie)
- Berkeley (USA)
- University of Warwick (Royaume Uni)
- Arizona State University (USA)
- Kyushu Institute of Technology (Japan)
- University of Science and Technology Beijing (Chine)
ANR and contracts
Industrial contracts with Rhodia Electronics & Catalysis
Thesis
- "Phosphorescence: mécanismes et nouveaux matériaux", Frédéric Clabau, 2005
- "Etude d'une nouvelle famille d'aluminosilicates de baryum, et strontium dopés à l'europium : structure, fluorescence, phosphorescence et thermoluminescence ", Grégoire Denis, 2008
- "Tunable luminescence of doped MAl2Si2O8 aluminosilicates (M= Ca, Sr, Ba)", Wubin Dai, 2012
- "Synthèse et caractérisation de matériaux luminescents inorganiques", Gaganpreet Kaur Behrh, 2017