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Activation of visible up-conversion luminescence in transparent and conducting ZnO:Er:Yb films by laser annealing

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dc.contributor.authorLluscá, M.
dc.contributor.authorLópez Vidrier, J.
dc.contributor.authorLauzurica, S.
dc.contributor.authorSánchez Aniorte, M.I.
dc.contributor.authorAntony, A.
dc.contributor.authorMolpeceres, C.
dc.contributor.authorHernández, S.
dc.contributor.authorGarrido, B.
dc.contributor.authorBertomeu, J.
dc.date.issued2015
dc.descriptionLink to a related website: http://diposit.ub.edu/dspace/bitstream/2445/67331/1/652917.pdf, Open Access via Unpaywall
dc.description.abstractTransparent 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:YVO 4 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.
dc.identifier.citationJournal of Luminescence, 2015; 167:101-105
dc.identifier.doi10.1016/j.jlumin.2015.06.017
dc.identifier.issn0022-2313
dc.identifier.urihttps://hdl.handle.net/11541.2/130003
dc.language.isoen
dc.publisherElsevier Science BV
dc.relation.fundingSpanish Ministerio de Economia y Competitividad ENE2010-21384-C04-03
dc.relation.fundingEuropean Regional Development Fund
dc.rightsCopyright 2015 Elsevier BV
dc.source.urihttps://doi.org/10.1016/j.jlumin.2015.06.017
dc.subjectup-conversion
dc.subjectZnO:Er:Yb
dc.subjectlaser annealing
dc.subjecttransparent conducting oxides
dc.titleActivation of visible up-conversion luminescence in transparent and conducting ZnO:Er:Yb films by laser annealing
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916167877601831

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