Solvent-based conductive ink, preparation method and application

Abstract

The invention relates to a solvent-based conductive silver ink, a preparation method and an application. The solvent-based metal conductive ink for ink jet printing is characterized by being preparedfrom 10%-30% metal salt, 1%-10% of a reducing agent, 10%-30% of a complex stabilizer, 40%-60% of a solvent and 0.1%-0.5% of an additive, wherein the sum of mass percentage of the components is 100%. The preparation method comprises the following steps: firstly, dissolving the metal salt in a stabilizer and a solvent, then adding the reducing agent, performing stirring at room temperature, then leaving the mixture to stand overnight, performing filtering to obtain a clear solution, and then adding the additive to obtain the conductive ink. A complex precursor solution is formed with the preparation method of the ink, the conductive ink is printed on a flexible substrate by a 3D ink jet printer in an additive manufacturing mode, and a conductive film is obtained by heating. The preparation method is simple, low in cost and low in post-treatment temperature. The prepared solvent-based conductive ink is suitable for ink jet printing and spray holes are prevented from being blocked; the conductive ink is suitable for preparing electrode circuits of various flexible electronic devices such as solar cells, field effect transistors, RFID and the like.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to a conductive ink, in particular to a solvent-based conductive ink, a preparation method and an application. Background technique [0002] Flexible electronics has become a major trend in the future of the industry due to its features such as bendability, stretchability, ultra-thin, ultra-low power consumption, durability, and portability. However, cost and mass production are important challenges for flexible electronic products to move from laboratory to large-scale commercial use in the future. Using inkjet printing technology can significantly reduce the cost of manufacturing flexible electronic devices, even comparable to the cost of printing newspapers. In addition, the development of microelectronics technology puts forward higher requirements for the production of printed electronic materials, and further develops in the direction of high density, thin wi...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the above-mentioned defects such as easy agglomeration of the ink, poor stability, easy plugging during inkjet printing, high post-processing temperature, and long processing time, and provide a solvent-based conductive ink and a preparation method. The solvent-based conductive ink, through Form a complex precursor solution, react to form a conductive film when heated, and ensure that the conductive film is dense and smooth