Method for preparing conducting film on substrate surface based on silver nanoparticle ink

Abstract

The invention provides a method for preparing a conducting film on a substrate surface based on silver nanoparticle ink. The specific steps include dissolving silver acetate and octadecylamine in a methylbenzene solvent according to a proportion; then taking a lithium borohydride solution, dropwise adding the lithium borohydride solution to a mixed solution, stirring, then using a separating funnel to remove an aqueous solution at an upper layer, and leaving a methylbenzene layer containing silver particles; adding ethyl alcohol or acetone to perform washing and depositing nanoparticles; finally taking out a precipitate, and drying the precipitate in a vacuum drying oven at room temperature, thereby obtaining a nano-silver particle solid; dissolving the prepared silver nanoparticles in a solvent, thereby preparing silver nanoparticle ink; loading the silver nanoparticle ink in an ink box, and using an ink-jet printer to print nanoparticles on the surface of a PET substrate; and then performing thermal treatment on the PET substrate carrying the silver nanoparticles to obtain a nano-silver conducting film. The method for preparing the conducting film on the substrate surface based on silver nanoparticle ink greatly reduces cost, is simple and controllable in operation process, and is suitable for a subsequent yellow light process.

Description

technical field [0001] The invention relates to the field of preparation of nano-silver conductive film, in particular to a method for preparing a conductive film on the surface of a substrate based on silver nano-particle ink. Background technique [0002] In recent years, electronic devices have become an important direction for the development of microelectronics technology. Many simple and efficient non-traditional processing methods have been developed and applied to the preparation of electronic devices, such as screen printing, gravure printing, rigid mask technology, soft printing, Nanoimprinting, laser thermal transfer printing, inkjet printing, etc. These methods can meet the accuracy requirements of some electronic devices such as large-area displays, sensors, solar cells, and applications in mobile phones, remote controls, etc. [0003] Nano-silver conductive film refers to a high-tech product obtained by coating transparent nano-silver ink on a transparent orga...

AI Technical Summary

Problems solved by technology

However, there are the following difficulties in the production of yellow light technology: (1) The compatibility between nano-silver, dry film and etching solution needs to ensure the adhesion and resolution of dry film and nano-silver and the effect of etching solution on nano-silver and dry film. (2) The compatibility between the nano-silver conductive film and the silver glue needs to ensure the conductivity and adhesion of the overlapping joints

[0004] The nano-conductive film produced by the general process is difficult to meet the process requirements in the subsequent yellow light treatment process, which limits the production of nano-silver TP