Flexible transparent conductive films as electrodes

Project description

Transparent, conductive and flexible electrodes are one of the most important components of the development and design of new consumer electronics for everyday use. Currently, such electrodes are based on expensive metals such as indium, which is one of the more rare metals in the earth's crust. Manufacturing is also done at high cost and with advanced technology. The project proposes technologies for developing flexible, transparent and conductive electrodes based on integrated metallic carbon nanotubes, functionalized graphs and abundant metals. The goal is that the electrodes should be able to manufacture with scalable processes, such as spray coating, or so-called scroll-to-roll printing. 

Project coordinator

Other university or unit

Project results

Research Seminar and Programme planning on Transparent, conducting and flexible films for electrodes, June 3 and 4, 2019, Oulu. The goal of the event is to disseminate our results and to initiate newer and tie the existing collaboration with companies stronger. The event also gives us the opportunity to oversee funding instruments (e.g. H2020, Euripides, Business Finland, M-era.Net) and to plan future projects.

Research on devices that are entirely printed (including substrate, electrode and functional material) are agreed with researchers at VTT Technical Research Centre of Finland. For more information contact Prof. Jussi Hiltunen, Jussi.Hiltunen@vtt.fi or Prof. Krisztian Kordas, krisztian.kordas@oulu.fi 

The project results are disseminated and acknowledged in theses and publications
R. Valasma, Micropatterned transparent conductive films of single-wall carbon nanotubes on plasma-treated polyethylene terephthalate surfaces, B.Sc. thesis, University of Oulu 2019. http://jultika.oulu.fi/files/nbnfioulu-201906042332.pdf 
H. Ervasti, Inkjet-printed SWCNT conductors and sensors on PDMS, M.Sc. thesis, University of Oulu 2020. http://jultika.oulu.fi/files/nbnfioulu-202007042733.pdf 
M. Mohl et al., 2D Tungsten Chalcogenides: Synthesis, Properties and Applications. Advanced Materials and Interfaces 2020 doi: https://doi.org/10.1002/admi.202000002
J. Wei et al., Green Carbon Nanofiber Networks for Advanced Energy Storage, ACS Applied Energy Materials, 2020, 3, 3530.
R. Valamsa et al., Grid-type transparent conductive thin films of carbon nanotubes as capacitive touch sensors, Nanotechnology 2020, 31, 305303.
N. Halonen et al., Bio-Based Smart Materials for Food Packaging and Sensors – A Review, Frontiers in Materials 2020, 7, 82.
H. Ervasti et al., Inkjet deposited SWCNT micropatterns on stretchable PDMS-Ag substrate-electrode structure for piezoresistive strain sensing, 2020, in review.
P. S. Pálvölgyi et al., Ultra-low permittivity porous silica-cellulose nanocomposite substrates for 6G telecommunication, Nanotechnology 2020, 31, 435203. 
P. S. Pálvölgyi et al., Lightweight porous silica foams with extreme-low dielectric permittivity and loss for future 6G wireless communication technologies, Nano Research 2020, in press.
 

Partners

Applied Physics, Division of Materials Science, Luleå University of Technology
Nano for Energy, Department of Physics, Umeå University