Abstract
Ag nanoparticles were successfully prepared using a liquid reduction method with a suitable mixture reductant of polyethylene glycol (PEG) and ethylene glycol (EG). OP-10 as a dispersing agent, was used to prepare the conductive Ag ink. Ag nanoparticles with an average particle size of 40 nm were prepared while the ratio of PEG to EG was 1:2. Meanwhile, the Ag particles had a narrow size distribution and great dispersion performance. The effects of paper substrates, sintering temperature, and sintering time on the conductivity of the printed Ag ink pattern were also studied. It was found that Lucky porous high glossy photo paper was a good candidate as the printing substrate. The resistivity of the printed pattern could reach 5.1 × 10−3 Ω·cm after heated at 100 °C for 2 h. Hence, the printed pattern showed good conductivity which led to the LED light being on. Furthermore, the Ag nanoparticle ink could be printed to form any pattern as required that still showed good electrical conductivity after being sintered under low-temperature. This could provide new possibilities for the preparation of flexible electrodes.
Highlights
As a new type of functional material, Ag nanoparticles are widely used in many fields such as chemicals, aerospace, medical, electronics, and so on
Ag nanoparticles nanoparticles vary under different different temperatures and reaction times so the effects of the volume ratios, temperatures, and time factors temperatures and reaction times so the effects of the volume ratios, temperatures, and timefactors of ofthe thePEG-ethylene glycol (EG)
Based on a controlled reaction temperature, ratio of polyethylene glycol (PEG) to EG, and reaction time, the Ag nanoparticles were prepared through a liquid reduction method
Summary
As a new type of functional material, Ag nanoparticles are widely used in many fields such as chemicals, aerospace, medical, electronics, and so on. Inkjet hasofamaterials, high utilization of materials,process, simple to traditionalto printing methods, inkjet has a high utilization simple manufacturing manufacturing process, low prices, large area, high precision, and many other advantages. Material of of thethe silver conductive inkink andand is composed of of Ag particles, dispersants, surfactants, solvents, and other additives.Usually. Additives severely decrease the conductivity the printed pattern formed by silver the silver. To remove these additives, the sintering temperature of the conductive ink has to generally be higher ink. A series of low boiling point additives were studied and introduced the particle sizes. A series of low boiling point additives were studied and introduced into the ink into system inkvariety systemand for variety andatolow acquire a low sintered temperature ink for ink-jet printing.
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