Amphiphilic Silver Nanoparticles for Inkjet-Printable Conductive Inks

Abstract

The large-scale manufacturing of flexible electronics is nowadays based on inkjet printing technology using specially formulated conductive inks, but achieving adequate wetting of different surfaces remains a challenge. In this work, the development of a silver nanoparticle-based functional ink for printing on flexible paper and plastic substrates is demonstrated. Amphiphilic silver nanoparticles with narrow particle size distribution and good dispersibility were prepared via a two-step wet chemical synthesis procedure. First, silver nanoparticles capped with poly(acrylic acid) were prepared, followed by an amidation reaction with 3-morpholynopropylamine (MPA) to increase their lipophilicity. Density functional theory (DFT) calculations were performed to study the interactions between the particles and the dispersion medium in detail. The amphiphilic nanoparticles were dispersed in solvents of different polarity and their physicochemical and rheological properties were determined. A stable ink containing 10 wt% amphiphilic silver nanoparticles was formulated and inkjet-printed on different surfaces, followed by intense pulsed light (IPL) sintering. Low sheet resistances of 3.85 Ω sq–1, 0.57 Ω sq–1 and 19.7 Ω sq–1 were obtained for the paper, coated poly(ethylene terephthalate) (PET) and uncoated polyimide (PI) flexible substrates, respectively. Application of the nanoparticle ink for printed electronics was demonstrated via a simple flexible LED circuit.

Enhancing the Photocatalytic Performance of BiVO4 for Micropollutant Degradation by Fe and Ag Photomodification

“…Binding Energy in Sample, eV 1% Ag@BVO 8% Ag@BVO 15% Ag@BVO 5% Fe@BVO 27.5% Fe@BVO 50% In general, smaller Ag nanoparticles (AgNPs) are more reactive than their larger counterparts and have a partial electron-donating character [46,47]. With lower Ag In general, smaller Ag nanoparticles (AgNPs) are more reactive than their larger counterparts and have a partial electron-donating character [46,47]. With lower Ag loading, it is likely that smaller nanoparticles are obtained, which are more susceptible to oxidation.…”

Nanosilver: A magic particles for human welfare

“…Nanosilver has been explored for its potential in electronic applications, such as conductive inks, transparent conductive films, and sensors. Studies have reported the use of nanosilver for producing highly conductive and flexible electronic devices [48,14,78,39] .…”

Application of intense pulsed light in the development of poly(vinyl butyral)‐based all‐solid‐state Ag/AgCl reference electrodes

“…IPL is a non-laser, high-intensity white light emitted from a xenon flash lamp. With processing times on the order of microseconds to milliseconds, it is highly compatible with inkjet printing and other highthroughput printed electronics fabrication technologies [40][41][42].…”