Philippe Smet

phosphors lanthanides persistent luminescence leds rare earths luminescence lighting defects quantum dots piezoluminescence mechanoluminescence energy storage afterglow thermoluminescence osl solid state lighting rare earth europium spectroscopy transition metals pressure sensing glow in the dark traps displays optics ugent scicomm twitter physics outreach optically stimulated luminescence modeling glow-in-the-dark cl outcoupling lifetime cathodoluminescence thermal quenching edx sem lamps luminous efficacy lumen per watt energy efficiency