Inkjet Printed Fractal-Connected
Electrodes with Silver
Nanoparticle Ink
- Publication date
- 2012
- Publisher
Abstract
The development of a simple and reliable method for nanoparticles-based
ink in an aqueous solution is still a challenge for its inkjet printing
application. Herein, we demonstrate the inkjet printing of fractal-aggregated
silver (Ag) electrode lines on substrates. Spherical, monodisperse
Ag nanoparticles have been synthesized using silver nitrate as a precursor,
ethylene glycol as a reducing agent, and polyvinyl pyrrollidone as
a capping agent. As-synthesized pure Ag nanoparticles were well dispersed
in water-ethylene glycol mixture, which was directly used as an ink
for inkjet printing. Using this ink, the Ag electrodes of fractal-connected
lines were printed on Si/SiO<sub>2</sub>, glass, and polymer substrates.
The fractal-connected Ag lines were attributed to the diffusion-limited
aggregation of Ag nanoparticles and the effect of annealing on conductivity
was also examined