Uniform, highly conductive, and patterned transparent films of a percolating silver nanowire network on rigid and flexible substrates using a dry transfer technique

By Anuj R. Madaria, Akshay Kumar, F. Ishikawa, Chongwu Zhou. 2010

500 citations recorded by the source corpus.

Silver nanowire films are promising alternatives to tin-doped indium oxide (ITO) films as transparent conductive electrodes. In this paper, we report the use of vacuum filtration and a polydimethylsiloxane (PDMS)-assisted transfer printing technique to fabricate silver nanowire films on both rigid and flexible substrates, bringing advantages such as the capability of patterned transfer, the best performance among various ITO alternatives (10 Ω/sq at 85% transparency), and good adhesion to the underlying substrate, thus eliminating the previously reported adhesion problem. In addition, our method also allows the preparation of high quality patterned films of silver nanowires with different line widths and shapes in a matter of few minutes, making it a scalable process. Furthermore, use of an anodized aluminum oxide (AAO) membrane in the transfer process allows annealing of nanowire films at moderately high temperature to obtain films with extremely high conductivity and good transparency. Using this transfer technique, we obtained silver nanowire films on a flexible polyethylene terephthalate (PET) substrate with a transparency of 85%, a sheet resistance of 10 Ω/sq, with good mechanical flexibility. Detailed analysis revealed that the Ag nanowire network exhibits two-dimensional percolation behavior with good agreement between experimentally observed and theoretically predicted values of critical volume.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/908bd9d0fd8ba66fc6c7e7bac24a9e31dcc9356d

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biomedical Engineering

1. J. Simonato
2. C. Celle
3. C. Mayousse
4. Liangbing Hu
5. Masaya Nogi
6. Yang Yang
7. Soojin Park
8. David Hui

In Electrical and Electronic Engineering

1. J. Simonato
2. C. Celle
3. C. Mayousse
4. Rui Zhu
5. Masaya Nogi
6. J. Munday
7. Liangbing Hu
8. Katsuaki Suganuma

In Materials Chemistry

1. David Hui
2. Soojin Park
3. Kyong Yop Rhee
4. Liangbing Hu
5. Yang Yang
6. Rui Zhu
7. Tze‐Bin Song
8. J. Simonato

Citations in the corpus

• Highly flexible transparent film heaters based on random networks of silver nanowires (2012, methodology): “We compared SEM images of random networks of nanowires that had been submitted either to the already known thermal annealing technique [19, 20, 27], or to an applied voltage of 18 V.”
• Fabrication of silver nanowire transparent electrodes at room temperature (2011, methodology): “Although AgNW electrodes have such outstanding features, there are some issues that currently inhibit the large-scale application of AgNW electrodes on heat-sensitive substrates: a heating step at around 200 °C is required to obtain high electrical conductivity [12, 16, 18, 19, 23, 24] and AgNWs dep”
• Optical haze of transparent and conductive silver nanowire films (2013, background): “Ag NW networks also benefit from cost efficient and scalable deposition techniques such as roll-to-roll printing [16], dry contact printing [12], and drop cast deposition [21].”
• A Review of Conductive Metal Nanomaterials as Conductive, Transparent, and Flexible Coatings, Thin Films, and Conductive Fillers: Different Deposition Methods and Applications (2018, background): “[28] Ag NWs Vacuum filtration Not available 85 10 Ω/sq Flexible”
• Solution-processed flexible transparent conductors composed of silver nanowire networks embedded in indium tin oxide nanoparticle matrices (2012, background): “42 experimentally determined from the relationship between amount of nanowire deposited on the substrate surface and the surface conductance of nanowire films [20].”