title: Multicolor Depth-Resolved Cathodoluminescence from Eu-Doped SiOC Thin Films.
abstract: A very bright room-temperature cathodoluminescence (CL) signal, tunable in the visible range by changing the Eu(2+) concentration, has been observed in Eu-doped SiOC films. Depth-resolved CL measurements demonstrate that a bilayer consisting of two SiOC films containing different Eu concentrations allows the continuous tuning of the Eu(2+) emission from blue to green by changing the energy of the exciting electrons. Furthermore, the proper control at the nanoscale of the electron penetration depth allows to obtain a high-quality white light emission. The compatibility of SiOC films with Si technology opens the way to promising applications of Eu-based materials in lighting and display technologies.
authors.affiliation: MATIS IMM CNR , via Santa Sofia 64, 95123 Catania, Italy.|Dipartimento di Fisica e Astronomia, Università di Catania , via Santa Sofia 64, 95123 Catania, Italy.
authors.forename: Gabriele
authors.initials: G
authors.lastname: Bellocchi
authors.affiliation: IMEM-CNR , Parco Area delle Scienze 37/A, 43124 Parma, Italy.
authors.forename: Filippo
authors.initials: F
authors.lastname: Fabbri
authors.affiliation: MATIS IMM CNR , via Santa Sofia 64, 95123 Catania, Italy.
authors.forename: Maria
authors.initials: M
authors.lastname: Miritello
authors.affiliation: MATIS IMM CNR , via Santa Sofia 64, 95123 Catania, Italy.
authors.forename: Fabio
authors.initials: F
authors.lastname: Iacona
authors.affiliation: MATIS IMM CNR , via Santa Sofia 64, 95123 Catania, Italy.
authors.forename: Giorgia
authors.initials: G
authors.lastname: Franzò
keywords: cathodoluminescence; field-emission display; lighting; phosphors; photonics; rare earth ions