Ag–graphene hybrid conductive ink for writing electronics

Abstract

This work reported a green method of synthesizing silver nanoparticles (AgNPs) with glucose acting as reducing agents to improve the conductivity of conductive ink. Silver nitrate, glucose, and polyvinylpyrrolidone (PVP), were used as silver precursor, reducing agent, and capping agent, respectively. The optimal condition of synthesizing AgNPs was obtained by varying the reactant ratio and temperature. The AgNPs were characterized by X-ray diffraction (XRD), UV-visible spectroscopy (UV-Vis), and scanning electron microscope (SEM). The obtained AgNPs with diameters of 80 to 100 nm were almost spherical and they were redispersed well in polyurethane acrylate (PUA). Compared with traditional hydrazine hydrate, the prepared AgNPs were better with respect to uniform size, dispersion, stability, and the absence residual solvent. After UV sintering, the conductivity (2.3×10 5 S/m) and mechanical properties of prepared conductive ink were good. Therefore, using glucose as a reducing agent to prepare AgNPs conductive ink is feasible and noteworthy because it is an extremely common material.

Annealed graphene sheets decorated with silver nanoparticles for inkjet printing

“…The bending angle was approximate 150°. The resistance of the track increased around 17% after 2000 bending cycles, which was compatible with that of other reports [33,45]. The stable flexibility is mainly benefited by the intrinsically robust two-dimensional structure of graphene, which were interconnected to form a conductive network that retarding the fracture of the track as compared with pure metal conductive track.…”

Conductive silver inks and their applications in printed and flexible electronics

“…Conductive inks mark one of the top places in the list. Other than these polymers [39][40] hybrid inks [41][42][43][44] are also being successfully used for conductive inks. There is suction in the present market and a serious competition running between technological giants in producing such type of appliances which not only simplifies lifestyle but also fetches major attention.…”

Creation of Conductive Graphene Materials by Bacterial Reduction Using Shewanella Oneidensis

“…However, the conductivity of single flakes, the average thickness after reduction, and the structural quality of microbially‐reduced graphene oxide (mrGO) have not yet been determined, making it impossible to identify the feasibility of the microbial production approach and the range of potential applications for reduced graphene oxide produced through this method. A high conductance and surface‐to‐volume ratio would make mrGO applicable to field effect transistors (FET), biosensors, transparent conductors, batteries, graphene polymer nanocomposites, and conductive inks …”

“…A high conductance and surface-to-volume ratio would make mrGO applicable to field effect transistors (FET), biosensors, transparent conductors, batteries, graphene polymer nanocomposites, and conductive inks. [28][29][30][31][32][33] Thorough characterization of the conductive properties of mrGO requires a combination of single-flake measurements, to identify the intrinsic resistance within flakes, and bulk measurements, to evaluate the effectiveness of interflake charge movement. In this study, we combined for the first time conductance measurements of microbially-reduced flakes with determination of their surface-area-to-thickness ratio and compared them to GO and chemically-reduced graphene oxide (crGO).…”