Colloidal-structured metallic micro-grids: High performance transparent electrodes in the red and infrared range

Giacomo Torrisi; João S. Luis; Olalla Sanchez-Sobrado; Rosario Raciti; Manuel J. Mendes; Hugo Águas; Elvira Fortunato; Rodrigo Martins; Antonio Terrasi

doi:10.1016/j.solmat.2019.03.046

Colloidal-structured metallic micro-grids: High performance transparent electrodes in the red and infrared range

Giacomo Torrisi, João S. Luis, Olalla Sanchez-Sobrado, Rosario Raciti, Manuel J. Mendes, Hugo Águas, Elvira Fortunato, Rodrigo Martins, Antonio Terrasi

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Abstract

One of the most promising approaches to produce industrial-compatible Transparent Conducting Materials (TCMs) with excellent characteristics is the fabrication of TCO/metal/TCO multilayers. In this article, we report on the electro-optical properties of a novel high-performing TCO/metal/TCO structure in which the intra-layer is a micro-structured metallic grid instead of a continuous thin film. The grid is obtained by evaporation of Ag through a mask of polystyrene colloidal micro-spheres deposited by the Langmuir-Blodgett method and partially dry-etched in plasma. IZO/Ag grid/IZO structures with different thicknesses and mesh dimensions have been fabricated, exhibiting excellent electrical characteristics (sheet resistance below 10 Ω/□) and particularly high optical transmittance in the near-infrared spectral region as compared to planar (unstructured) TCM multilayers. Numerical simulations were also used to highlight the role of the Ag mesh parameters on the electrical properties.

Original language	English
Pages (from-to)	7-12
Number of pages	6
Journal	Solar Energy Materials and Solar Cells
Volume	197
DOIs	https://doi.org/10.1016/j.solmat.2019.03.046
Publication status	Published - 1 Aug 2019

Keywords

Ag micro-grid
IR trasmittance
Multilayer thin film
Transparent conductive electrodes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solmat.2019.03.046Licence: CC BY-NC-ND

Colloidal-structured metallic micro-gridsSubmitted manuscript, 982 KBLicence: CC BY-NC-ND

Cite this

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title = "Colloidal-structured metallic micro-grids: High performance transparent electrodes in the red and infrared range",

abstract = "One of the most promising approaches to produce industrial-compatible Transparent Conducting Materials (TCMs) with excellent characteristics is the fabrication of TCO/metal/TCO multilayers. In this article, we report on the electro-optical properties of a novel high-performing TCO/metal/TCO structure in which the intra-layer is a micro-structured metallic grid instead of a continuous thin film. The grid is obtained by evaporation of Ag through a mask of polystyrene colloidal micro-spheres deposited by the Langmuir-Blodgett method and partially dry-etched in plasma. IZO/Ag grid/IZO structures with different thicknesses and mesh dimensions have been fabricated, exhibiting excellent electrical characteristics (sheet resistance below 10 Ω/□) and particularly high optical transmittance in the near-infrared spectral region as compared to planar (unstructured) TCM multilayers. Numerical simulations were also used to highlight the role of the Ag mesh parameters on the electrical properties.",

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author = "Giacomo Torrisi and Luis, {Jo{\~a}o S.} and Olalla Sanchez-Sobrado and Rosario Raciti and Mendes, {Manuel J.} and Hugo {\'A}guas and Elvira Fortunato and Rodrigo Martins and Antonio Terrasi",

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AU - Torrisi, Giacomo

AU - Luis, João S.

AU - Sanchez-Sobrado, Olalla

AU - Raciti, Rosario

AU - Mendes, Manuel J.

AU - Águas, Hugo

AU - Fortunato, Elvira

AU - Martins, Rodrigo

AU - Terrasi, Antonio

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PY - 2019/8/1

Y1 - 2019/8/1

N2 - One of the most promising approaches to produce industrial-compatible Transparent Conducting Materials (TCMs) with excellent characteristics is the fabrication of TCO/metal/TCO multilayers. In this article, we report on the electro-optical properties of a novel high-performing TCO/metal/TCO structure in which the intra-layer is a micro-structured metallic grid instead of a continuous thin film. The grid is obtained by evaporation of Ag through a mask of polystyrene colloidal micro-spheres deposited by the Langmuir-Blodgett method and partially dry-etched in plasma. IZO/Ag grid/IZO structures with different thicknesses and mesh dimensions have been fabricated, exhibiting excellent electrical characteristics (sheet resistance below 10 Ω/□) and particularly high optical transmittance in the near-infrared spectral region as compared to planar (unstructured) TCM multilayers. Numerical simulations were also used to highlight the role of the Ag mesh parameters on the electrical properties.

AB - One of the most promising approaches to produce industrial-compatible Transparent Conducting Materials (TCMs) with excellent characteristics is the fabrication of TCO/metal/TCO multilayers. In this article, we report on the electro-optical properties of a novel high-performing TCO/metal/TCO structure in which the intra-layer is a micro-structured metallic grid instead of a continuous thin film. The grid is obtained by evaporation of Ag through a mask of polystyrene colloidal micro-spheres deposited by the Langmuir-Blodgett method and partially dry-etched in plasma. IZO/Ag grid/IZO structures with different thicknesses and mesh dimensions have been fabricated, exhibiting excellent electrical characteristics (sheet resistance below 10 Ω/□) and particularly high optical transmittance in the near-infrared spectral region as compared to planar (unstructured) TCM multilayers. Numerical simulations were also used to highlight the role of the Ag mesh parameters on the electrical properties.

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KW - IR trasmittance

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KW - Transparent conductive electrodes

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Colloidal-structured metallic micro-grids: High performance transparent electrodes in the red and infrared range

Abstract

Keywords

UN SDGs

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2018 E-MRS Spring Meeting

Member of Master defense (as Supervisor of candidate)

Giacomo Torrisi

Cite this

Colloidal-structured metallic micro-grids: High performance transparent electrodes in the red and infrared range

Abstract

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Activities

2018 E-MRS Spring Meeting

Member of Master defense (as Supervisor of candidate)

Giacomo Torrisi

Cite this