Naslov
Nanoparticle-based Conductive Inks for Inkjet Printing of Planar Electrodes

Autori
Kassal, Petar

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XIV Meeting of Young Chemical Engineers - Book of Abstracts / Žižek, Krunoslav ; Katančić, Zvonimir ; Kovačić, Marin - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2022, 8-8

Skup
XIV. susret mladih kemijskih inženjera (SMLKI 2022)

Mjesto i datum
Zagreb, Hrvatska, 24.02.2022. - 25.02.2022

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Recenziran

Ključne riječi
vodljive tinte ; inkjet ispis ; planarne elektrode
(conductive inks ; inkjet printing ; planar electrodes)

Sažetak
Miniaturized planar electrodes are needed to enable emerging sensor applications, such as wearable (bio)chemical sensing. While there are different ways of fabricating such electrodes, inkjet printing of conductive features presents a greener, scalable, and cost effective fabrication technology. A key challenge in the process of printing electrodes is the formulation of a conductive ink with suitable properties. Metal and carbon nanoparticles are the most common conductive materials used for this purpose. However, the selected particles should be small enough to pass through the printer nozzle and remain stable in the formulated suspension without aggregating. For effective inkjet printing, the fluid dynamic parameters (viscosity, density and surface tension) of the ink must be optimized. Wetting of the substrate and adhesion must also be considered. Finally, post-processing of the printed electrodes is needed to remove stabilizers and additives, thereby improving the electrical conductivity. While thermal processing is the gold standard, high temperatures may limit the choice of substrate and alternative processing technologies are sought. In this presentation, development of planar electrodes via inkjet printing will be illustrated using two examples: a conductive ink based on silver nanoparticles and a conductive ink based on graphene nanosheets. The entire process will be explained: from nanoparticle synthesis and stabilization, ink formulation and optimization, to inkjet printing on plastic sheets. Finally, the potential of flash lamp annealing for post-processing of the electrodes will be reviewed.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

POVEZANOST RADA