Eu-doped ZnO nanowire arrays grown by electrodeposition

Lupan, Oleg; Pauporté, Thierry; Viana, Bruno; Aschehoug, P.; Ahmadi, Mahdi; Cuenya, Beatriz Roldán; Rudzevich, Yauheni; Lin, Youxi; Chow, Lee

doi:10.1016/j.apsusc.2013.06.053

Cited by 92 publications

(67 citation statements)

References 53 publications

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“…6a shows a survey XPS spectrum from the NPs, indicating the following elements presence: Zn, O and adventitious C. No contaminants from the nanoparticle synthesis were detected on the sample surface. In our samples, residual amounts of adventitious carbon and carbonyl compounds were unavoidable due to their exposure to air [63,64].…”

Section: Xps Resultsmentioning

confidence: 96%

Structural, optical, XPS and magnetic properties of Zn particles capped by ZnO nanoparticles

Morozov

Белоусова

Ortega

et al. 2015

Journal of Alloys and Compounds

148

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Section: Xps Resultsmentioning

confidence: 96%

Structural, optical, XPS and magnetic properties of Zn particles capped by ZnO nanoparticles

Morozov

Белоусова

Ortega

et al. 2015

Journal of Alloys and Compounds

148

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“…The asymmetric allure for all the ZnO:Eu spectra can be explained by the presence of this latter Eu 2? emission band [11,[64][65][66]. The low red PL emission peak at 613 nm observed in ZnO:Eu samples is associated to the 5 D 0 ?…”

Section: Photoluminescence Spectroscopymentioning

confidence: 82%

A valence states approach for luminescence enhancement by low dopant concentration in Eu-doped ZnO nanoparticles

et al. 2015

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The paper presents a simple, reproducible, controllable, and direct wet chemical synthesis method for Zn 1-x Eu x O nanoparticles. The full understanding of decomposition mechanism of the as-obtained oxalate precipitate was achieved based on the thermal analysis correlated with the evolved gas analysis and FTIR spectroscopy. The structure, morphology, and optical luminescent properties of the Zn 1-x Eu x O nanoparticles have been investigated by X-ray diffraction, Raman spectroscopy, HRTEM, SAED, XPS, and PL. The XRD studies reveal the formation of a hexagonal wurtzite-type structure. The presence of Eu 2 O 3 cubic structure can be observed up to 0.5 mol% Eu, suggesting that the solubility of the divalent or trivalent Eu into the ZnO lattice is limited. The formation of Eu 2 O 3 secondary phase at higher Eu concentration is sustained by Raman spectroscopy and XPS, as well. The TEM investigations of the Eu-doped ZnO samples illustrate the presence of aggregates with different shapes and dimensions formed by agglomerated spherical and polyhedral nanoparticles with sizes ranging from 20 to 120 nm. The effect of europium concentration on the structural and morphological characteristics, as well as on the luminescent properties was studied with special emphasis on the europium chemical states-Eu 2? and Eu 3? . The PL measurements sustain the presence of both divalent and trivalent europium ions into the ZnO host lattice and, at the same time, an increase of its defects density induced by the dopant presence.

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“…Methods to prepare ZnO nanostructures are versatile, including sputtering [13], hydrothermal deposition [15], sol-gel method [4,9,10] and electrochemical deposition [16]. Among these methods, electrochemical deposition is widely adopted as it can be conducted in the ambient environment, which can reduce the preparation cost required for high temperature and high vacancy reaction vessel [17,18].…”

Section: Introductionmentioning

confidence: 99%