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  Eu-doped ZnO nanowire arrays grown by electrodeposition

Lupan, O., Pauporté, T., Viana, B., Aschehoug, P., Ahmadi, M., Roldan Cuenya, B., et al. (2013). Eu-doped ZnO nanowire arrays grown by electrodeposition. Applied Surface Science, 282, 782-788. doi:10.1016/j.apsusc.2013.06.053.

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Lupan, Oleg1, 2, 3, 4, Autor
Pauporté, Thierry1, Autor
Viana, Bruno2, Autor
Aschehoug, Patrick2, Autor
Ahmadi, Mahdi3, Autor
Roldan Cuenya, Beatriz3, Autor           
Rudzevich, Yauheni3, Autor
Lin, Yuqing3, Autor
Chow, Lee3, Autor
Affiliations:
1Laboratoire d’Electrochimie, Chimie des Interfaces et Modélisation pour l’Energie (LECIME), UMR-7575, ENSCP-Chimie Paristech, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France, ou_persistent22              
2Laboratoire de Chimie de la Matière Condensée de Paris, UMR 7574, ENSCP, 11 rue P. et M. Curie, 75231 Paris cedex 05, France, ou_persistent22              
3Physics Department, University of Central Florida, ou_persistent22              
4Department of Microelectronics and Semiconductor Devices, Technical University of Moldova, 168 Stefan cel Mare Blvd., Chisinau MD-2004, Republic of Moldova, ou_persistent22              

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Schlagwörter: ZnO Europium doping Nanowires Electrodeposition Photoluminescence
 Zusammenfassung: The preparation of efficient light emitting diodes requires active optical layers working at low voltage for light emission. Trivalent lanthanide doped wide-bandgap semiconducting oxide nanostructures are promising active materials in opto-electronic devices. In this work we report on the electrochemical deposition (ECD) of Eu-doped ZnO (ZnO:Eu) nanowire arrays on glass substrates coated with F-doped polycrystalline SnO2. The structural, chemical and optical properties of ZnO:Eu nanowires have been systematically characterized by X-ray diffraction, transmission electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and photoluminescence. XRD results suggest the substitution of Zn2+ by Eu ions in the crystalline lattice. High-resolution TEM and associated electron diffraction studies indicate an interplanar spacing of 0.52 nm which corresponds to the (0 0 0 1) crystal plane of the hexagonal ZnO, and a growth along the c-direction. The ZnO:Eu nanowires have a single crystal structure, without noticeable defects. According to EDX, SIMS and XPS studies, cationic Eu species are detected in these samples showing the incorporation of Eu into the ZnO matrix. The oxidation states of europium ions in the nanowires are determined as +3 (74%) and +2 (26%). Photoluminescence studies demonstrated red emission from the Eu-doped ZnO nanowire arrays. When Eu was incorporated during the nanowire growth, the sharp 5D07F2 transition of the Eu3+ ion at around 612 nm was observed. These results suggest that Eu doped ZnO nanowires could pave the way for efficient, multispectral LEDs and optical devices.

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Sprache(n): eng - English
 Datum: 2013-06-092013-03-252013-06-102013-06-152013-10-01
 Publikationsstatus: Erschienen
 Seiten: 7
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/j.apsusc.2013.06.053
 Art des Abschluß: -

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Titel: Applied Surface Science
  Kurztitel : Appl. Surf. Sci.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Amsterdam : Elsevier B.V.
Seiten: 7 Band / Heft: 282 Artikelnummer: - Start- / Endseite: 782 - 788 Identifikator: ISSN: 0169-4332
CoNE: https://pure.mpg.de/cone/journals/resource/954928576736