title: Rare earth doped ring-shaped luminescent micro-composites on patterned ferroelectrics.
abstract: Ferroelectric domain patterns are used as templates on which rare earth doped high refractive index nanoparticles activated with trivalent rare earth ions (RE(3+)) are selectively assembled on domain surfaces with a specific polarization. Two-dimensional luminescent heterostructures, with sizes and geometries defined by the ferroelectric patterning are achieved. The process of incorporation and consolidation of the optically active nanoparticles into the alternate domain structures leads to luminescent ring-shaped arrangements with innovative geometries and to a micrometer spatial control of the trivalent rare earth ion emitters. Multicolor emission systems and the possibility of chromatic switching at the micrometer scale among the three different compounds forming the two dimensional structure is demonstrated.
authors: Dept. Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
authors: J V
authors: JV
authors: García-Santizo
authors: P
authors: P
authors: Molina
authors: M O
authors: MO
authors: Ramírez
authors: K
authors: K
authors: Lemanski
authors: W
authors: W
authors: Strek
authors: P J
authors: PJ
authors: Dereń
authors: L E
authors: LE
authors: Bausá
mesh_terms: D049449:Luminescence; D008674:Metals, Rare Earth / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008856:Microscopy, Fluorescence / Q000379:methods*; D053758:Nanoparticles / Q000737:chemistry*; D009556:Niobium / Q000737:chemistry*; D055095:Optics and Photonics / Q000379:methods*; D010087:Oxides / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D014961:X-Ray Diffraction
chemical_list: D008674:Metals, Rare Earth; D010087:Oxides; D009556:Niobium; C091692:lithium niobate