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Cathodoluminescence characterization of rare earth doped composite materials based on porous GaP

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Abstract

Porous GaP layers doped with erbium or europium elements have been obtained by electrochemical etching and further impregnation processes. The thermal treatments for optical activation of rare earth (RE) ions lead to partial oxidation of porous GaP skeleton and a composite material is obtained. The presence of ErPO4 and EuPO4 oxide nanophases is detected by X-ray diffraction (XRD) analysis. Visible luminescence from RE ions in the composite material has been investigated by means of the cathodoluminescence (CL) technique in the scanning electron microscope. Intense red and green emission lines characteristic from Er3+ and Eu3+ ions dominate the CL spectra in the case of parallel and regular nanotubes in the samples. The role of the oxygen content and the detected phases in the luminescence results are discussed.

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Acknowledgement

This work has been supported by MEC (project MAT-2003-00455).

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Authors and Affiliations

  1. Departamento Física de Materiales, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, 28040, Madrid, Spain

    B. Sánchez, B. Méndez & J. Piqueras

  2. National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova

    L. Sirbu & I. M. Tiginyanu

  3. Laboratory of Low-Dimensional Semiconductor Structures, Institute of Applied Physics, Academy of Sciences of Moldova, Chisinau, Republic of Moldova

    I. M. Tiginyanu & V. V. Ursaki

Authors
  1. B. Sánchez
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  2. B. Méndez
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  3. J. Piqueras
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  4. L. Sirbu
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  5. I. M. Tiginyanu
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  6. V. V. Ursaki
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Correspondence to B. Méndez.

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Sánchez, B., Méndez, B., Piqueras, J. et al. Cathodoluminescence characterization of rare earth doped composite materials based on porous GaP. J Mater Sci 43, 680–683 (2008). https://doi.org/10.1007/s10853-007-2163-z

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  • DOI: https://doi.org/10.1007/s10853-007-2163-z

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