Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/67331
Title: Activation of visible up-conversion luminescence in transparent and conducting ZnO:Er:Yb films by laser annealing
Author: Lluscà, M. (Marta)
López Vidrier, Julià
Lauzurica, S.
Sánchez-Aniorte, M. I.
Antony, Aldrin
Molpeceres, C.
Hernández, S.
Garrido Fernández, Blas
Bertomeu i Balagueró, Joan
Keywords: Òxid de zinc
Luminescència
Pel·lícules fines
Zinc oxide
Luminescence
Thin films
Issue Date: 20-Jun-2015
Publisher: Elsevier B.V.
Abstract: Transparent and conducting ZnO:Er:Yb thin films with visible up-conversion (660-nm emission under 980-nm excitation) were fabricated by RF magnetron sputtering. The as-deposited films were found to be transparent and conducting and the activation of the Er ions in these films to produce up-conversion luminescence was achieved by different post deposition annealing treatments in air, vacuum or by laser annealing using a Nd:YVO4 laser. The structural, electrical and optical properties and the up-conversion efficiency of these films were found to be strongly influenced by the annealing method, and a detailed study is reported in this paper. It has been demonstrated that, although the air annealing was the most efficient in terms of up-conversion, laser annealing was the only method capable of activating Er ions while preserving the electrical conductivity of the doped films. It has been shown that a minimum energy was needed in laser annealing to optically activate the rare earth ions in the ZnO host material to produce up-conversion. Up-converting and transparent conducting ZnO:Er:Yb films with an electrical resistivity of 5×10-2 Ω·cm and transparency ~80% in the visible wavelength range has been achieved by laser annealing.
Note: Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.jlumin.2015.06.017
It is part of: Journal of Luminescence, 2015, vol. 167, p. 101-105
Related resource: http://dx.doi.org/10.1016/j.jlumin.2015.06.017
URI: http://hdl.handle.net/2445/67331
ISSN: 0022-2313
Appears in Collections:Articles publicats en revistes (Electrònica)
Articles publicats en revistes (Física Aplicada)

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