Conductive inks are considered very promising for device fabrication on flexible substrates and large areas. Silver (Ag)-graphene hybrid inks offer many opportunities, including cost/conductivity optimization for different applications. In this work, several conductive hybrid ink formulations containing Ag nanostructures and graphene derivatives were prepared using different processing strategies and thoroughly characterized. SEM and morphological studies were used to explore the probable reasons for the difference in electrical conductivity of various inks. Strong interaction between Ag nanoparticles and graphene layers prevented the formation of island structures in films, especially at high temperatures. While Ag nanowires and graphene layers formed a uniform, dense three-dimensional network, offering high electrical conductivity. Additionally, an improvement of electrical conductivity by using graphene quantum dots as a graphene component in hybrid inks was observed, which was related to creating new conductive bridges. The highest conductivity of prepared inks varied in the range of 2.67 × 10² S/cm to 4.0 × 10⁴ S/cm. Finally, formulation guidelines were offered to be used for inks by several printing methods.

导电油墨被认为非常有希望用于柔性基板和大面积的器件制造。银 (Ag)-石墨烯混合油墨提供了许多机会，包括针对不同应用的成本/电导率优化。在这项工作中，使用不同的加工策略制备了几种含有银纳米结构和石墨烯衍生物的导电混合油墨配方，并对其进行了彻底的表征。SEM 和形态学研究用于探索各种油墨导电性差异的可能原因。银纳米颗粒和石墨烯层之间的强相互作用阻止了薄膜中岛结构的形成，尤其是在高温下。而银纳米线和石墨烯层形成了均匀、密集的三维网络，提供了高导电性。此外，观察到通过使用石墨烯量子点作为混合墨水中的石墨烯组分来提高导电性，这与创建新的导电桥有关。制备的油墨的最高电导率在 2.67 × 10 范围内变化² S/cm 至 4.0 × 10 ⁴ S/cm。最后，通过几种印刷方法提供了用于油墨的配方指南。