| dc.description.abstract | Graphene nanoparticles (GNP) conductive ink has become the main filler material in the
formulation of conductive ink. Because of that, various efforts have been performed to
obtain the influencing parameters that can affect the GNP conductive ink electrical
conductivity. Based on that, this study was performed to investigate the effect of
temperature, ink thickness, and shape on the sheet resistivity of GNP conductive ink. The ink
formulation used was 35 wt% of GNP as filler loading and printed to form 4 types of pattern
with 3 different thicknesses by using the stencil printing method. The samples were cured at
three different temperatures of 90 °C, 100 °C, and 110 °C, and sheet resistivity was measured
to obtain the correlation between the samples’ electrical properties with the temperature,
ink thickness, and shape. The results showed that sample of zigzag pattern, with the
thickness of 1 mm and cured at 90 °C produced the highest average sheet resistivity of 20.77
kΩ/sq, and a sample of sinusoidal pattern, with a thickness of 3 mm and cured at 110 °C
produced the lowest average sheet resistivity of 4.01 kΩ/sq. As for the trend, the increment
of ink thickness and curing temperature reduces the sheet resistivity for most of the ink
patterns including straight-line, square, and sinusoidal. When the design of the pattern has
more curves and bends such as the zigzag pattern, the sheet resistivity value cannot be
reduced by increasing the ink thickness and curing temperature. It is because the shape of
the pattern becomes the main influencing parameter in determining the ink electrical
conductivity. | en_US |
