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

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)7-12
Number of pages6
JournalSolar Energy Materials and Solar Cells
Volume197
DOIs
Publication statusPublished - 1 Aug 2019

Fingerprint

Multilayers
Metals
Infrared radiation
Electrodes
Sheet resistance
Polystyrenes
Opacity
Masks
Evaporation
Electric properties
Optical properties
Plasmas
Fabrication
Thin films
Computer simulation

Keywords

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

Cite this

@article{c660ae2e12ea4e4ba733650fd22b5a5c,
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.",
keywords = "Ag micro-grid, IR trasmittance, Multilayer thin film, Transparent conductive electrodes",
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",
note = "This work was supported by the project PON_206_2 {"}S5 (Smart Small Scale Solar Systems){"}, by the project PRN 2014/2020 {"}BEST-4U{"}, by FEDER funds through the COMPETE 2020 Programme and National Funds through FCT (Portuguese Foundation for Science and Technology) under the projects UID/CTM/50025/2013, ALTALUZ (PTDC/CTM-ENE/5125/2014), SuPerSolar (PTDC/NAN-OPT/28430/2017), TACIT (PTDC/NAN-OPT/28837/2017) and LocalEnergy (PTDC/EAM-PEC/29905/2017). O. Sanchez-Sobrado and M. J. Mendes acknowledge funding by FCT through the grants SFRH/BPD/114833/2016 and SFRH/BPD/115566/2016, respectively.",
year = "2019",
month = "8",
day = "1",
doi = "10.1016/j.solmat.2019.03.046",
language = "English",
volume = "197",
pages = "7--12",
journal = "Solar Energy Materials and Solar Cells",
issn = "0927-0248",
publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Colloidal-structured metallic micro-grids: High performance transparent electrodes in the red and infrared range

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

N1 - This work was supported by the project PON_206_2 "S5 (Smart Small Scale Solar Systems)", by the project PRN 2014/2020 "BEST-4U", by FEDER funds through the COMPETE 2020 Programme and National Funds through FCT (Portuguese Foundation for Science and Technology) under the projects UID/CTM/50025/2013, ALTALUZ (PTDC/CTM-ENE/5125/2014), SuPerSolar (PTDC/NAN-OPT/28430/2017), TACIT (PTDC/NAN-OPT/28837/2017) and LocalEnergy (PTDC/EAM-PEC/29905/2017). O. Sanchez-Sobrado and M. J. Mendes acknowledge funding by FCT through the grants SFRH/BPD/114833/2016 and SFRH/BPD/115566/2016, respectively.

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.

KW - Ag micro-grid

KW - IR trasmittance

KW - Multilayer thin film

KW - Transparent conductive electrodes

UR - http://www.scopus.com/inward/record.url?scp=85064159818&partnerID=8YFLogxK

U2 - 10.1016/j.solmat.2019.03.046

DO - 10.1016/j.solmat.2019.03.046

M3 - Article

VL - 197

SP - 7

EP - 12

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

SN - 0927-0248

ER -