Scintillators & Phosphors

Head: Pr. C.Dujardin

Permanent members: Dr. B.Mahler, Dr. Y. Guyot, Dr. K. Lebbou

PhD Students: L.Wollesen, M.Baravaglio, P.Mai

Post Doc: Y.Cheref

High-energy excitations commonly lead to luminescence (scintillation), but the complexity of the particular relaxation processes renders them difficult to describe. A general study of such processes as well as materials R&D is undertaken, with special attention on high energy calorimetry, security, x-ray imaging as well as of memory effects and the role of the density of excitation on the non-proportionality effect. Given that the essential phenomena take place on short timescales (ns-ps) under VUV or electronic excitation, the group is actively involved in synchrotron experiments and studies at CELIA (Bordeaux). The development of novel materials inclusing phosphors is also undertaken, especially in the form of microcrystalline fibers and thin films for imaging applications. Nanoscintillators constitute another important part of our activities, both to aid comprehension of relaxation processes and with respect to potential applications. To pursue our goals, we have developed several specific experiments:

• Radioluminescence (cw and pulsed for fast timing analysis)

• Cathodoluminescence

• Thermoluminescence, afterglow and bright-burn analysis

• Light yield measurement under X-ray excitation.

• Persistent Luminescence analysis

Illustrative recent publications :

Gaz detection
Nature Phot. (2023)

Efficient radioactive gas detection by scintillating porous metal–organic frameworks

Matteo Orfano, Jacopo Perego, Francesca Cova, Charl X Bezuidenhout, Sergio Piva, Christophe Dujardin, Benoit Sabot, Sylvie Pierre, Pavlo Mai, Christophe Daniel, Silvia Bracco, Anna Vedda, Angiolina Comotti, Angelo Monguzzi

Scintillating MOF
Nature Com. (2022)

Highly luminescent scintillating hetero-ligand MOF nanocrystals with engineered Stokes shift for photonic applications

J Perego, Charl X Bezuidenhout, I Villa, F Cova, R Crapanzano, I Frank, F Pagano, N Kratochwill, E Auffray, S Bracco, A Vedda, C Dujardin, PE Sozzani, F Meinardi, A Comotti, A Monguzzi

Scintillating Nanoplatelets
Materials Adv. (2022)

Perspective on the scintillating response of CdSe based nanoplatelets heterostructures

Zhu Meng, Benoit Mahler, Julien Houel, Florian Kulzer, Andrey Vasil'Ev, Christophe Dujardin

Scintillating MOF
Nature Phot. (2021)

Composite fast scintillators based on high-Z fluorescent metal–organic framework nanocrystals

J Perego, I Villa, A Pedrini, EC Padovani, R Crapanzano, A Vedda, Christophe Dujardin, Charl X Bezuidenhout, S Bracco, PE Sozzani, A Comotti, L Gironi, M Beretta, M Salomoni, N Kratochwil, S Gundacker, E Auffray, F Meinardi, A Monguzzi

Spherical Quantum Wells
Nanoscale (2021)

Perspectives for CdSe/CdS spherical quantum wells as rapid-response nano-scintillators

Zhu Meng, Benoit Mahler, Julien Houel, Florian Kulzer, Gilles Ledoux, Andrey Vasil'Ev, Christophe Dujardin

Nanoscintillator for therapy
Adv. Sci. (2020)

Radiation dose‐enhancement is a potent radiotherapeutic effect of rare‐earth composite nanoscintillators in preclinical models of glioblastoma

Anne‐Laure Bulin, Mans Broekgaarden, Frédéric Chaput, Victor Baisamy, Jan Garrevoet, Benoît Busser, Dennis Brueckner, Antonia Youssef, Jean‐Luc Ravanat, Christophe Dujardin, Vincent Motto‐Ros, Frédéric Lerouge, Sylvain Bohic, Lucie Sancey, Hélène Elleaume

Scintillating Perovkite
Chem. Mat. (2020)

Library of two-dimensional hybrid lead halide perovskite scintillator crystals

Aozhen Xie, Francesco Maddalena, Marcin E Witkowski, Michal Makowski, Benoit Mahler, Winicjusz Drozdowski, Stuart Victor Springham, Philippe Coquet, Christophe Dujardin, Muhammad Danang Birowosuto, Cuong Dang

Scintillating Nano HfO2:Ti
Adv. Opt. Mat. (2019)

The Bright X-Ray Stimulated Luminescence of HfO2 Nanocrystals Activated by Ti Ions

I.Villa, F.Moretti, M.Fasoli, A.Rossi, B.Hattendorf, C.Dujardin, M.Niederberger, A.Vedda and A.Lauria

Scintillating CdSe Nanoplatelets
npj 2D Mater. and Appl. (2019)

On the use of CdSe scintillating nanoplatelets as time taggers for high-energy gamma detection

R.Turtos, S.Gundacker, S.Omelkov, B.Mahler, A.Khan, J.Saaring, Z.Meng, A.Vasil'ev, C.Dujardin, M.Kirm, I.Moreels, E.Auffray and P.Lecoq

Scintillating Perovskites
Crystals (2019)

Inorganic, Organic, and Perovskite Halides with Nanotechnology for High–Light Yield X- and γ-ray Scintillators

F.Maddalena, L.Tjahjana, A.Xie, Arramel, S.Zzng, H.Wang, P.Coquet, W.Drozdowski, C.Dujardin, C.Dang and M.Birowosuto

A review on Scintillators
IEEE TNS (2018)

Needs, Trends, and Advances in Inorganic Scintillators

Dujardin, C., Auffray, E., Bourret-Courchesne, E., Dorenbos, P., Lecoq, P., Nikl, M., Vasil'ev, A. N., Yoshikawa, A., Zhu, R.-Y.

Scintillating aerogels
ACS Appl. Mater. & Interf. (2018)

Design and Application of High Optical Quality YAG:Ce Nanocrystal-Loaded Silica Aerogels

Odziomek, Mateusz, Chaput, Frederic, Dujardin, Christophe, Lerouge, Frederic, Cassette, Philippe, Sitarz, Maciej, Parola, Stephane

Thick InGaN/GaN QW
CrystEngComm (2018)

Toward ultra-thick and bright InGaN/GaN structures with high number of QWs

Tomáš Hubáček, Alice Hospodková, Karla Kuldová, Jiří Oswald, Jiří Pangrác, Vitězslav Jarý, Filip Dominec, Markéta Slavická Zíková, František Hájek, Eduard Hulicius, Alexej Vetushka, Gilles Ledoux, Christophe Dujardin and Martin Nikl

Circadian Light Source
ECS J.S.S.S. and Tech. (2017)

Circadian Light Source Based on KxNa1-xLuS2:Eu2+ Phosphor

V. Jary, L. Havlak, J. Barta, M. Rejman, A. Bystricky, C. Dujardin, G. Ledoux, and M. Nikl

Co-doping and hole mobility
ChemPhysChem (2017)

Consequences of Ca Codoping in YAlO3 :Ce Single Crystals

F. Moretti, K. Hovhannesyan, M. Derdzyan, G. Bizarri, E. Bourret, A. Petrosyan and C. Dujardin

High resolution x-ray imaging
CrysEngComm (2016)

Epitaxial growth of gadolinium and lutetium- based aluminum perovskite thin films for X-ray micro-imaging applications

F. Riva, P.-A. Douissard, T. Martin, F. Carla, Y. Zorenko and C. Dujardin

Memory effects in scintillators
PhysChemChemPhys (2016)

Deep traps can reduce memory effects of shallower ones in scintillators

F. Moretti, G. Patton, A. Belsky, A-G. Petrosyan and C. Dujardin

Energy deposition in Nanoscintillators
Nanoscale (2015)

Modelling energy deposition in nanoscintillators to predict the efficiency of the X-ray-induced photodynamic effect

AL Bulin, A. Vasil’ev, A. Belsky, D. Amans, G. Ledoux and C. Dujardin

A new beam position monitor
J.Mater. Chem.C (2015)

Low-absorption, multi-layered scintillating material for high resolution real-time X-ray beam analysis

A. Pereira, T. Martin, M. Levinta and C. Dujardin

Modelling scintillation mechanisms
J.Phys.Chem.C (2015)

Kinetic Model of Energy Relaxation in CsI:A (A = Tl and In) Scintillators

S. Gridin, A. Belsky, C. Dujardin, A. Gektin, N. Shiran, and A. Vasil’ev

Scintillating fibers
Acta Materialla (2014)

Ce-doped LuAG single-crystal fibers grown from the melt for high-energy physics

X. Xu, K. Lebbou, F. Moretti, K. Pauwels, P. Lecoq, E. Auffray and C. Dujardin

Measuring the thermalization lenths
J.Phys.Chem.Lett.(2013)

Estimation of the Electron Thermalization Length in Ionic Materials

A.Belsky, K.Ivanovskikh, A.Vasil’ev, MF Joubert and C. Dujardin

Nanoscintillators for photodynamic therapy
J.Phys. Chem.C (2013)

X‐ray-Induced Singlet Oxygen Activation with Nanoscintillator- Coupled Porphyrins

AL Bulin, C.Truillet, R. Chouikrat, F. Lux, C. Frochot, D. Amans, G. Ledoux, O. Tillement, P. Perriat, M. Barberi-Heyob, and C. Dujardin