Short biography

Mohamed Dammak received his PhD in Physics in 1999 from the University of Monastir (Tunisia) and his Habilitation in 2005 from the University of Sfax, (Tunisia). Since 2010 he is a full professor of Physics. He published more than 60 peer-reviewed papers, he supervised ten PhD theses. His research interests include theoretical and experimental studies of lanthanide and transition metals doped materials used in wide range of applications, from lighting and public signaling to lasers, photovoltaic applications, smart agriculture, quantum information and biological markers, temperature sensors and biosensor.

Abstract

Luminescent materials are used in many devices for wide range of applications, from lighting by  RGB LED, white LEDs and public signaling to lasers, photovoltaic applications, and biological markers.  Lanthanide ions are at the heart of many applications thanks to their luminescence properties. These ions are generally used as dopants because of their many transitions in the visible and infrared ranges. Nanostructures with RE luminescent centers offer light absorption from the near-UV to the blue spectral region and allow for the spectral control of light emission. The wavelength conversion and photon cutting has led to new research avenues and applications of RE-activated phosphors such as converting the solar spectrum into light that is effectively converted to electrical energy in Si-based solar cells. Biological applications, for imaging, Biological marking, and temperature sensing are also investigated. The non-contact thermometry methods based on the fluorescence intensity ratio (FIR) approach between two thermally adjacent emitting energy levels will be presented in view of their unique advantages; sufficient accuracy, and simplicity of readout and calibration.

Selected References

[1]. Dammak et al., Journal of Luminescence, 203, (2018) 707-713.
[2]. Dammak et al., Journal of Luminescence, 194, (2018) 96-101.
[3]. Dammak et al., Journal of Alloys and Compd, 763 (2018) 56-61.
[4]. Dammak et al., Ceramics International 45 (2019) 3675–3679