Inkjet printed fractal-connected electrodes with silver nanoparticle ink.
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/SiO2, 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.
Department of BIN Fusion Technology, School of Semiconductor and Chemical Engineering, and Nanomaterials Processing Research Center, Chonbuk National University , 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea.
Mohammad
M
Vaseem
Kil Mok
KM
Lee
A-Ra
AR
Hong
Yoon-Bong
YB
Hahn