Transport Parameters of Inkjet Printed Nanoparticle Silver on Polyimide Substrate Measured at Room and Liquid Nitrogen Temperatures

This brief presents the transport parameters of silver layers on a polyimide substrate fabricated by an inkjet printing technology using nanoparticle inks with 20 wt% and 40 wt% silver. All the electrical characteristics of the samples were measured by Hall effect measurement system at 0.37 T. The electron mobility in inkjet printed silver layer was 7.07 and 4.58 ${\rm cm}^{2}/{\rm V}$ s for 20 wt% silver, 29.6 and 21.3 ${\rm cm}^{2}/{\rm V}$ s for 40 wt% silver at 77 and 300 K, respectively. The resistivity in inkjet printed silver layer with 20 wt% is $20.6\times 10^{-6}$ and $27.1\times 10^{-6}\Omega~{\rm cm}$, and $4.81\times 10^{-6}$ and $8.27\times 10^{-6}\Omega~{\rm cm}$ for 40 wt% silver at 77 and 300 K, respectively. The surface morphology and profiles of the samples were obtained with an atomic force and scanning electron microscope.