Nanoscale Electrical Investigation of Transparent Conductive Electrodes Based on Silver Nanowire Network

Sy Hieu Pham (1, 2, 3) , Anthony Ferri (1) , Antonio Da Costa (1) , M. Mohan , van Dang Tran (4) , Duy Cuong Nguyen (4) , Pascal Viville (5) , Roberto Lazzaroni (2) , Rachel Desfeux (1) , Philippe Leclère (2, 3)

1 UCCS Équipe Couches Minces & Nanomatériaux
2 Laboratory for Chemistry of Novel Materials
3 Laboratory for Physics of Nanomaterials and Energy
4 ITIMS - International Training Institute for Materials Science
5 Materia Nova R&D center

Presently, metallic nanowires (NWs) are the most promising materials to fabricate flexible transparent electrodes as an alternative to indium tin oxide. Here, the high performance of transparent conductive electrodes (TCEs) based on silver nanowires (AgNWs) percolation networks is reported. With optimized experimental conditions for the deposition, the AgNWs result in low sheet resistance of 10 Ω sq⁻¹ combined with a high optical transmittance of 92.6% at λ = 550 nm. This leads to a valuable figure of merit as compared to other TCEs. In this study, the nanoscale electrical properties of the AgNWs are measured via conductive atomic force microscopy to characterize the percolation network. The electrical resistivity value calculated for a single AgNW is found to be about 12.35 µΩ cm, while a nanoscale conductivity map over an AgNW network bridging two electrodes has revealed high levels of current within the network over a distance of more than 1000 µm. The favorable determined conductivity results along with the high optical properties of the AgNWs network strongly suggest that thin-film electrodes based on AgNWs will be a potential approach for future flexible electronic devices.

Domaines: Matériaux; Chimie

Sy Hieu Pham, Anthony Ferri, Antonio Da Costa, M. Mohan, van Dang Tran, et al.. Nanoscale Electrical Investigation of Transparent Conductive Electrodes Based on Silver Nanowire Network. Advanced Materials Interfaces, 2022, pp.2200019. ⟨10.1002/admi.202200019⟩. ⟨hal-03663825⟩