Naslov
Amphiphilic silver nanoparticles for inkjet printed electronics on flexible plastic substrates

Autori
Ivanišević, Irena ; Krivačić, Sara ; Gudan Pavlović, Iva ; Milardović, Stjepan ; Kassal, Petar

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

Izvornik
Book of abstracts 27th HSKIKI / Marković, Dean ; Meštrović, Ernest ; Namjesnik, Danijel ; Tomašić, Vesna - Zagreb : Hrvatsko kemijsko društvo, 2021, 358-358

Skup
27. hrvatski skup kemičara i kemijskih inženjera (27HSKIKI)

Mjesto i datum
Veli Lošinj, Hrvatska, 05.10.2021. - 08.10.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
amphiphilic silver nanoparticles ; conductive inks ; inkjet printing ; intense pulse light

Sažetak
Inkjet printing of metal nanoparticle-based conductive inks has recently been utilized abundantly as an attractive technology to replace traditional electronics manufacturing processes. Due to their remarkable electrical conductivity, silver nanoparticles (AgNPs) are the material of choice for printed flexible electronics, but formulating inks which are stable in different solvents, meet printer requirements, and adhere well to plastic substrates remains a challenge [1]. In this work, amphiphilic AgNPs which can easily be dispersed in alcohols were synthesized. In the first step, poly(acrylic acid) stabilized AgNPs (PAA-AgNPs) were obtained by using hydrazine for silver nitrate reduction. Amphiphilic AgNPs were then prepared by modifying PAA-AgNPs with 3- morpholinopropylamine (MPA) via an amidation reaction. The stability of the AgNP suspensions in several solvents was investigated by UV-Vis and zeta-potential measurements. Dynamic light scattering measurements revealed that the amphiphilic AgNPs had an average size of less than 10 nm, which did not pose a risk of clogging printer nozzles. A conductive ink formulation consisting of a 5 wt % AgNP dispersion in a 50 vol % water/ethanol mixture was selected for inkjet printing. Viscosity, surface tension and density of the ink were optimized to match the printer requirements. Multiple layers were printed on PET sheets and electrical properties of the printed films were evaluated with a four-point probe. Photonic annealing (IPL) was used to improve the film conductivities, achieving sheet resistances below 1 Ω/sq.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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