Terahertz time-domain spectroscopy and near-field microscopy of transparent silver nanowire networks

Niels J.J. van Hoof; Matteo Parente; Andrea Baldi; Jaime Gómez Rivas

doi:10.1002/adom.201900790

Terahertz time-domain spectroscopy and near-field microscopy of transparent silver nanowire networks

Niels J.J. van Hoof (Corresponding author)
, Matteo Parente
, Andrea Baldi
, Jaime Gómez Rivas (Corresponding author)

Research output: Contribution to journal › Article › Academic › peer-review

19 Citations (Scopus)

125 Downloads (Pure)

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
Number of pages	7
Journal	Advanced Optical Materials
Volume	8
Issue number	3
DOIs	https://doi.org/10.1002/adom.201900790
Publication status	Published - 1 Feb 2020

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-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 “NanoPhotonics for Solid State Lighting;” European Research Council (ERC) (grant: 259272,665619).

Funders	Funder number
European Union's Horizon 2020 - Research and Innovation Framework Programme	259272, 665619
European Union's Horizon 2020 - Research and Innovation Framework Programme
Nederlandse Organisatie voor Wetenschappelijk Onderzoek	:680-47-550, 680-47-628

Keywords

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

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10.1002/adom.201900790

Publishers versionFinal published version, 2.03 MBLicence: TAVERNE

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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.",

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PY - 2020/2/1

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AB - 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.

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Terahertz time-domain spectroscopy and near-field microscopy of transparent silver nanowire networks

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