Terahertz Time-Domain Spectroscopy and Near-Field Microscopy of Transparent Silver Nanowire Networks

Niels van Hoof; Matteo Parente; Andrea Baldi; Jaime Gomez Rivas

doi:10.1002/adom.201900790

Terahertz Time-Domain Spectroscopy and Near-Field Microscopy of Transparent Silver Nanowire Networks

Niels van Hoof, Matteo Parente, Andrea Baldi, Jaime Gomez Rivas

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Abstract

Transparent conductive layers are key components of optoelectronic devices. Here, a polyol method is used to synthesize large quantities of monodisperse silver nanowires (AgNWs) and these are used to fabricate transparent conducting networks over large areas. The optical extinction and terahertz (THz) conductance of these networks are simultaneously investigated, using optical and THz spectroscopy, and THz near-field microscopy. The combination of optical and THz measurements allows the identification of transparent regions with high conductance. The THz near-field measurements reveal local variations in the THz transmission and conductance that are averaged in far-field measurements. These results demonstrate that THz near-field microscopy is a powerful tool for the quantitative investigation of new conductive transparent electrodes.

Original language	English
Article number	1900790
Pages (from-to)	1-7
Number of pages	7
Journal	ADVANCED OPTICAL MATERIALS
Volume	8
Issue number	3
Early online date	15 Aug 2019
DOIs	https://doi.org/10.1002/adom.201900790
Publication status	Published - 5 Feb 2020

Bibliographical note

Special Issue: Materials for Terahertz Optical Science and Technology

Funding

N.v.H. and M.P. contributed equally to this work. The authors acknowledge Stan ter Huurne for fruitful discussions and Erwin Zouthout for the atomic force microscopy images and Vincent Vandalon for the assistance with 4\u2010point probe measurements. This study was funded by Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) (Vici grant: 680\u201047\u2010628, Vidi grant:680\u201047\u2010550); NWO\u2010Signify Industrial Partnership Program \u201CNanoPhotonics for Solid State Lighting;\u201D European Research Council (ERC) (grant: 259272,665619). N.v.H. and M.P. contributed equally to this work. The authors acknowledge Stan ter Huurne for fruitful discussions and Erwin Zouthout for the atomic force microscopy images and Vincent Vandalon for the assistance with 4-point probe measurements. This study was funded by Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) (Vici grant: 680-47-628, Vidi grant:680-47-550); NWO-Signify Industrial Partnership Program \u201CNanoPhotonics for Solid State Lighting;\u201D European Research Council (ERC) (grant: 259272,665619).

Funders	Funder number
NWO‐Signify Industrial Partnership Program
Seventh Framework Programme
NWO-Signify
European Research Council
Nederlandse Organisatie voor Wetenschappelijk Onderzoek	680‐47‐628, :680‐47‐550
Horizon 2020 Framework Programme	259272, 665619

Keywords

THz near-field microscopy
THz spectroscopy
polyol synthesis
silver nanowires networks
transparent electrodes

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10.1002/adom.201900790

Terahertz Time‐Domain Spectroscopy and Near‐Field Microscopy of TransparentFinal published version, 2.02 MBLicence: Article 25fa Dutch Copyright Act

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Terahertz Time-Domain Spectroscopy and Near-Field Microscopy of Transparent Silver Nanowire Networks

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Keywords

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