Doping porous silicon with erbium: pores filling as a method to limit the Er-clustering effects and increasing its light emission oleh Guido Mula, Tony Printemps, Christophe Licitra, Elisa Sogne, Francesco D’Acapito, Narciso Gambacorti, Nicola Sestu, Michele Saba, Elisa Pinna, Daniele Chiriu, Pier Carlo Ricci, Alberto Casu, Francesco Quochi, Andrea Mura, Giovanni Bongiovanni, Andrea Falqui