title: New microarchitectures of (Er,Yb):Lu2O3 nanocrystals embedded in PMMA: synthesis, structural characterization, and luminescent properties.
abstract: We report the formation of two-dimensional disordered arrays of poly(methyl)methacrylate (PMMA) microcolumns with embedded single size distribution of Lu0.990Er0.520Yb0.490 nanocrystals, (Er,Yb):Lu2O3, using a disordered porous silicon template. The cubic (Er,Yb):Lu2O3 nanocrystals, which crystallize into the cubic system with Ia3¯ space group, were synthesized using the modified Pechini method. Electronic microscopic techniques were used to study the distribution of the nanocrystals in the PMMA columns. Cathodoluminescence was used to observe the visible luminescence of the particles. Red emission attributed to 4 F9/2 → 4I15/2 erbium transition is predominant in these new composites.
authors.affiliation: Física i Cristal lografia de Materials i Nanomaterials (FiCMA-FiCNA)-EMAS, Universitat Rovira i Virgili (URV), Campus Sescelades, c/ Marcel lí Domingo, s/n, Tarragona E-43007, Spain. mariacinta.pujol@urv.cat.
authors.forename: Montserrat
authors.initials: M
authors.lastname: Galceran
authors.forename: Maria Cinta
authors.initials: MC
authors.lastname: Pujol
authors.forename: Joan Josep
authors.initials: JJ
authors.lastname: Carvajal
authors.forename: Xavier
authors.initials: X
authors.lastname: Mateos
authors.forename: Pilar
authors.initials: P
authors.lastname: Formentín
authors.forename: Josep
authors.initials: J
authors.lastname: Pallarès
authors.forename: Lluis Francesc
authors.initials: LF
authors.lastname: Marsal
authors.forename: Kyung Ho
authors.initials: KH
authors.lastname: Park
authors.forename: Fabian
authors.initials: F
authors.lastname: Rotermund
authors.forename: Kihong
authors.initials: K
authors.lastname: Kim
authors.forename: Magdalena
authors.initials: M
authors.lastname: Aguiló
authors.forename: Francesc
authors.initials: F
authors.lastname: Díaz
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