title: Synthesis of suitable SiO2 nano particles as the core in core-shell nanostructured materials.
abstract: The effect of surfactant on the luminescent intensity of SiO2 @Y2O3:Eu3+ particles with a core shell structure is described. Core-shell particles are used in phosphor materials and employing spherical particles with a narrow size distribution is vital for the enhancement of luminescent properties. Three kinds of different surfactants were used to synthesis SiO2 nano particles via a sol gel process. The results demonstrated that comb polycarboxylic acid surfactant had a significant influence on the morphology and particle size distribution. Somehow, particles with 100 nm size and narrow size distribution were produced. These particles had relatively uniform packing, unlike particles produced with other surfactants or without surfactant which had irregular assembly. The photoluminescence intensity of SiO2 @Y2O3:Eu3+ particles that was synthesized by comb polycarboxylic acid surfactant was higher than those which were produced without surfactant.
authors.affiliation: Ceramic Division, Materials and Energy Research Center, 14155-4777, Iran.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Ghahari
authors.forename: Roya
authors.initials: R
authors.lastname: Aghababazadeh
authors.forename: Touradj
authors.initials: T
authors.lastname: Ebadzadeh
authors.forename: Alireza
authors.initials: A
authors.lastname: Mirhabibi
authors.forename: Rik
authors.initials: R
authors.lastname: Brydson
authors.forename: Paola
authors.initials: P
authors.lastname: Fabbri
authors.forename: Farhod
authors.initials: F
authors.lastname: Najafi