Anisotropic Resistivity Surfaces Produced in ITO Films by Laser‐Induced Nanoscale Self‐organization
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Título: | Anisotropic Resistivity Surfaces Produced in ITO Films by Laser‐Induced Nanoscale Self‐organization |
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Autor/es: | Lopez‐Santos, Carmen | Puerto, Daniel | Siegel, Jan | Macias‐Montero, Manuel | Florian, Camilo | Gil‐Rostra, Jorge | López‐Flores, Víctor | Borras, Ana | González‐Elipe, Agustín R. | Solis, Javier |
Grupo/s de investigación o GITE: | Holografía y Procesado Óptico |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal |
Palabras clave: | Anisotropy | Fs-laser processing | Indium tin oxide | Laser-induced periodic surface structures | Resistivity | Transparent conductive oxides |
Área/s de conocimiento: | Física Aplicada | Óptica |
Fecha de publicación: | 18-ene-2021 |
Editor: | Wiley-VCH GmbH |
Cita bibliográfica: | Advanced Optical Materials. 2021, 9(2): 2001086. https://doi.org/10.1002/adom.202001086 |
Resumen: | Highly anisotropic resistivity surfaces are produced in indium tin oxide (ITO) films by nanoscale self‐organization upon irradiation with a fs‐laser beam operating at 1030 nm. Anisotropy is caused by the formation of laser‐induced periodic surface structures (LIPSS) extended over cm‐sized regions. Two types of optimized structures are observed. At high fluence, nearly complete ablation at the valleys of the LIPSS and strong ablation at their ridges lead to an insulating structure in the direction transverse to the LIPSS and conductive in the longitudinal one. A strong diminution of In content in the remaining material is then observed, leading to a longitudinal resistivity ρL ≈ 1.0 Ω·cm. At a lower fluence, the material at the LIPSS ridges remains essentially unmodified while partial ablation is observed at the valleys. The structures show a longitudinal conductivity two times higher than the transverse one, and a resistivity similar to that of the pristine ITO film (ρ ≈ 5 × 10−4 Ω·cm). A thorough characterization of these transparent structures is presented and discussed. The compositional changes induced as laser pulses accumulate, condition the LIPSS evolution and thus the result of the structuring process. Strategies to further improve the achieved anisotropic resistivity results are also provided. |
Patrocinador/es: | This research was funded by the Spanish Ministry of Science, Innovation and Universities, the Spanish Research Agency (AEI, Ministry of Research and Innovation), and the European Regional Development Fund (ERDF) (grant numbers TEC2017-82464-R, PID2019-109603RA-I00, and PID2019-110430GB-C21), the “Consejería de Economía y Conocimiento de la Junta de Andalucía” (PAIDI-2020 projects P18-RT-3480 and -6079). The authors also acknowledge the Consejo Superior de Investigaciones Científicas for the “Intramural Project” (201850E057). C.L.-S. acknowledges the funding of the University of Seville through the “VI Plan Propio de Investigación y Transferencia de la US” (VI PPIT-US). M.M.-M. acknowledges the postdoctoral Juan de la Cierva Incorporación grant (IJCI-2017-33317)) of the same ministry. C.F. thanks the support from the European Commission through the Marie Curie Global Fellowship grant number 844977. V.L.-F. thanks the support from European Commission/Junta de Andalucía Talent-Hub Program. |
URI: | http://hdl.handle.net/10045/113387 |
ISSN: | 2195-1071 |
DOI: | 10.1002/adom.202001086 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2020 The Authors. Advanced Optical Materials published by Wiley‐VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1002/adom.202001086 |
Aparece en las colecciones: | INV - GHPO - Artículos de Revistas |
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