Abstract
Performance of graphene conductive ink is depending on its dispersion and stability. In this study, we fabricated water-based graphene conductive inks by sodium dodecyl (SDS) surfactant. The effect of SDS surfactants concentrations (0.1–0.5) wt% on properties of the graphene dispersion in water was investigated. From the results, 0.3 wt% of SDS concentrations shows the higher stability, wettability, and the electrical conductivity those compared with others concentration. Furthermore, the electrical conductivity of 0.3 wt% SDS concentration is 4 times higher than other concentrations after 10 times printing cycles. The results revealed an improvement of about 40 times in the electrical conductivity of the printed film when the number of printing cycles was increased from 1 to 10 times in 0.3 wt% SDS. Therefore, it is inferred that the conductive inks prepared from 0.3 wt% of SDS surfactants is highly suitable for printed electronic applications.
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