Synthesis, characterisation and optical properties of nanocrystalline Y2O3-Eu3+ dispersed in a silica matrix by a deposition-precipitation method - Bettinelli, Marco.; Cannas, Carla.; Casu, Mariano.; Mainas, Marina.; Musinu, Anna.; Piccaluga, Giorgio.; Polizzi, Stefano.; Speghini, Adolfo.