研究目的
Investigating the development of conductive inks for inkjet printing using a mixture of silver nanoparticles and its organic salt, focusing on thermal and laser sintering processes to achieve low electrical resistivity.
研究成果
The developed conductive ink based on silver nanoparticles and organic silver salt with polymeric additives shows high stability and optimal rheological characteristics for inkjet printing. Thermal annealing below 200°C and laser sintering with a diode laser at 453 nm were effective in achieving low electrical resistivity. The multi-pass laser sintering process, divided into solvent evaporation and nanoparticle sintering steps, was identified as the best mode for forming electrically conductive layers.
研究不足
The study focuses on the development and characterization of conductive inks and their sintering processes, but does not explore the long-term stability or environmental impact of the inks. The laser sintering process requires optimization for different substrates and ink formulations.
1：Experimental Design and Method Selection:
Synthesis of silver nanoparticles stabilized with butanoic acid via reduction of solid silver carboxylate with hydrazine hydrate in benzyl alcohol. Development of an inkjet ink formulation with silver nanoparticles and polymeric BYK dispersant.
2：Sample Selection and Data Sources:
Silver nanoparticles and organic silver salt were used.
3：List of Experimental Equipment and Materials:
Silver nitrate, butanoic acid, neodecanoic acid, benzoic acid, benzyl alcohol, propylene glycol butyl ether, propylene glycol phenyl ether, butyl alcohol, isopropyl alcohol, acetone, sodium hydroxide, hydrazine hydrate, Disperbyk anionic surfactant, IKA T-25 homogenizer, ultrasonic disperser, NY-XPlus
4：45 μm syringe filter, Brookfield DV3T-LV viscometer, DSA-25 drop shape analyzer, DimatixDMP 2831 printer, KW-4A spin coater, diode laser engraver, D8 Advance powder X-ray diffractometer, JEM 2010 electron microscope, Hitachi 3400 N scanning electron microscope, NETZSCH STA 409 simultaneous thermal analyzer. Experimental Procedures and Operational Workflow:
Synthesis of silver nanoparticles, preparation of ink formulation, printing and spin coating on polyimide film, thermal and laser sintering, characterization of physical properties and stability.
5：Data Analysis Methods:
XRD, TEM, SEM, TG, DSC analyses, resistivity measurements.
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