Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/105801
Title: Investigation on the structural changes of ZnO:Er:Yb thin film during laser annealing to fabricate a transparent conducting upconverter
Author: Lluscà, M. (Marta)
López Vidrier, Julià
Lauzurica, S.
Canteli, D.
Sánchez-Aniorte, M. I.
Molpeceres, C.
Antony, Aldrin
Hernández, S.
Alcobé, Xavier
Garrido Fernández, Blas
Bertomeu i Balagueró, Joan
Keywords: Pel·lícules fines
Cèl·lules solars
Terres rares
Luminescència
Propietats òptiques
Thin films
Solar cells
Rare earths
Luminescence
Optical properties
Issue Date: 9-Jan-2017
Publisher: Elsevier B.V.
Abstract: A transparent and conducting ZnO:Er:Yb thin film with upconversion properties has been achieved after being annealed with continuous laser radiation just before the ablation point of the material. This work demonstrates that the laser energy preserves the conductivity of the film and at the same time creates an adequate surrounding for Er and Yb to produce visible upconversion at 660, 560, 520, and 480 nm under 980 nm laser excitation. The relation between the structural, electrical and upconversion properties is discussed. It is observed that the laser energy melts part of the material, which recrystallizes creating rare earth oxides and two different wurtzite structures, one with substitutional rare earths and oxygen vacancies (responsible for the conductivity) and the other without substitutional rare earth ions (responsible for the upconversion emission).
Note: Versió postprint del document publicat a: https://doi.org/10.1016/j.jlumin.2016.12.052
It is part of: Journal of Luminescence, 2017, vol. 185, p. 112-119
Related resource: https://doi.org/10.1016/j.jlumin.2016.12.052
URI: http://hdl.handle.net/2445/105801
ISSN: 0022-2313
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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