Unpublished conference/Abstract (Scientific congresses and symposiums)
Flexible Transparent Electrodes based on Silver Nanowire Networks: Nanoscale Characterisation, Electrical Percolation, and Integration into Devices
Sannicolo, T.; Lagrange, M.; Xian, S. et al.
201611th International Conference on Surface Coatings and Nanostructured Materials
 

Files


Full Text
ABSTRACT_SANNICOLO_NANOSMAT 2016.pdf
Publisher postprint (74.07 kB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Silver nanowire networks; Transparent conductive materials
Abstract :
[en] The most efficient and widely used transparent conducting material (TCM) is currently indium tin oxide (ITO). However the indium scarcity associated to the lack of flexibility of ITO as well as relatively high cost of fabrication has prompted the search for alternative low cost and flexible materials. Among emerging transparent electrodes (TEs), silver nanowire (AgNW) networks appear as a promising substitute to ITO since these percolating networks exhibit high flexibility and excellent optoelectronic properties [1], with sheet resistance of a few Ω/sq and optical transparency of 90%, fulfilling the requirements for many applications such as solar cells, OLED displays, transparent heaters, or radio-frequency (RF) antennas and transparent shielding [2]. In addition, the fabrication of these electrodes involves low-temperature process steps and upscaling methods, thus making them very appropriate for future use as TE for flexible devices. Our research is focused on the fundamental understanding of the physical phenomena taking place at the scales of both the network (macroscale) and the NW-to- NW junctions (nanoscale), and on the ability of AgNW networks to be integrated as transparent electrodes for flexible optoelectronic and RF devices. In-situ electrical measurements performed during optimisation process such as thermal annealing and/or chemical treatments provide useful information regarding the activation process of the junctions [3]. Besides, nano-characterisation techniques such as Transmission Electron Microscopy (TEM) and ultramicrotomy help visualizing the physical phenomena involved in the diffusion of silver atoms to create well-sintered junctions. At the network’s scale, our ability to distinguish the nanowires taking part in the electrical conduction (“electrical percolating pathways”) from the inactive nanowires is a critical issue for the applications. By combining experimental and simulation studies, a discrete activation process of efficient percolating pathways through the network was evidenced. In the case where the network density is close to the percolation threshold and when low voltage is applied, individual “illuminated” pathways can be detected through the network while new branches get activated as soon as the voltage is increased. Here we will present our results on the study of AgNW networks at the macro and nano scales described above and will correlate it with the overall performance/characteristics of the networks. We will also present results on the integration of optimized AgNW networks into functional devices. [1] D.P. Langley, G. Giusti, C. Mayousse, C. Celle, D. Bellet, J.-P. Simonato, Nanotechnology, 24, 452001, (2013). [2] C. Celle, C. Mayousse, E. Moreau, H. Basti, A. Carella and J.-P. Simonato, Nano Res. 5, 427, (2012). [3] M. Lagrange, D.P. Langley, G. Giusti, C. Jimenez, Y. Bréchet, D. Bellet, Nanoscale 7, 17410, (2015).
Disciplines :
Physics
Author, co-author :
Sannicolo, T.;  Université de Grenoble Alpes > CEA LITEN
Lagrange, M.;  Université de Grenoble Alpes > LMGP
Xian, S.;  Université de Grenoble Alpes > LMGP
Munoz-Rojas, D.;  Université de Grenoble Alpes > LMGP
Moreau, S.;  Université de Grenoble Alpes > CEA LETI
Bréchet, Y.;  Université de Grenoble Alpes > SIMAP
Nguyen, Ngoc Duy  ;  Université de Liège > Département de physique > Physique des solides, interfaces et nanostructures
Celle, C.;  Université de Grenoble Alpes > CEA LITEN
Simonato, J.-P.;  Université de Grenoble Alpes > CEA LITEN
Bellet, D.;  Université de Grenoble Alpes > LMGP
Language :
English
Title :
Flexible Transparent Electrodes based on Silver Nanowire Networks: Nanoscale Characterisation, Electrical Percolation, and Integration into Devices
Publication date :
September 2016
Event name :
11th International Conference on Surface Coatings and Nanostructured Materials
Event place :
Aveiro, Portugal
Event date :
6-9 September 2016
Audience :
International
European Projects :
H2020 - 641640 - EJD-FunMat - European Joint Doctorate in Functional Materials Research
Funders :
CE - Commission Européenne [BE]
Available on ORBi :
since 04 March 2017

Statistics


Number of views
129 (3 by ULiège)
Number of downloads
61 (4 by ULiège)

Bibliography


Similar publications



Contact ORBi