title: Intense intrashell luminescence of Eu-doped single ZnO nanowires at room temperature by implantation created Eu-Oi complexes.
abstract: Successful doping and excellent optical activation of Eu(3+) ions in ZnO nanowires were achieved by ion implantation. We identified and assigned the origin of the intra-4f luminescence of Eu(3+) ions in ZnO by first-principles calculations to Eu-Oi complexes, which are formed during the nonequilibrium ion implantation process and subsequent annealing at 700 °C in air. Our targeted defect engineering resulted in intense intrashell luminescence of single ZnO:Eu nanowires dominating the photoluminescence spectrum even at room temperature. The high intensity enabled us to study the luminescence of single ZnO nanowires in detail, their behavior as a function of excitation power, waveguiding properties, and the decay time of the transition.
authors: Institute of Solid State Physics, Friedrich-Schiller-University Jena , Max-Wien-Platz 1, 07743 Jena, Germany.
authors: Sebastian
authors: S
authors: Geburt
authors: Michael
authors: M
authors: Lorke
authors: Andreia L
authors: AL
authors: da Rosa
authors: Thomas
authors: T
authors: Frauenheim
authors: Robert
authors: R
authors: Röder
authors: Tobias
authors: T
authors: Voss
authors: Uwe
authors: U
authors: Kaiser
authors: Wolfram
authors: W
authors: Heimbrodt
authors: Carsten
authors: C
authors: Ronning
mesh_terms: D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D053770:Nanowires / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D005063:Europium; D015034:Zinc Oxide