As a functional material, the excellent conductive properties of nano-metal conductive inks quickly attracted the attention of many well-known companies in Europe, America, Japan, South Korea and other countries. They invested in the establishment of R&D centers and focused on the development of conductive inks represented by nano-silver. Among them, some inks have been successfully commercialized.
According to the 2008 report of the well-known consulting company NanoMarkets, these companies specifically include: South Korea ANP, ABC Nanotechnology, InkTec, Japan ULVAC, Sumitomo Electric (SEI), Fujikura Kasei, Daiken Chemical, Harley Harima Chemical, American ANI, Nanodynamics, Paralec, Pchem Associates, INC, Cima Nanotech, Cabot, Creative Materials, DuPont, Ferro, Five Star Technologies, NanoGram, NanoMas, National Starch (Acheson and Xink), NovaCentrix, Sun More than 20 well-known companies such as Chemical and Bayer Corporation in Germany.
According to statistics, in the inkjet nano metal ink products currently produced on a large scale, the particle size is mostly about 10 nm ~ 15 nm, the sintering temperature is between 130 ℃ and 200 ℃, and the resistivity is about 2.3 μΩ•cm ~ 4 μΩ •Cm. Among them, there are only 4 kinds of inks with an average particle size of less than 10 nm: DGH 55LT-25C nano-silver conductive ink from ANP, L-Ag1TeH nano-silver conductive ink from ULVAC (3 nm ~ 7 nm), and NanoMas NTS05IJ40 type nano silver conductive ink (2 nm ~ 10 nm) and InkTec’s TEC-IJ-030 nano silver conductive ink (5 nm ~ 15 nm). There are only three types with a sintering temperature of about 100 ℃, namely NanoMas’ NTS05IJ40 nano-silver conductive ink, Cabot’s CCI-300 nano-silver superconducting ink and Bayer’s BayInk® nano-silver conductive ink.
According to related reports, the optimal particle size of nano-ink used for printing wires and conductive patterns is about 2 nm. Therefore, it is necessary to further develop the nano metal ink with smaller particle size, lower sintering temperature, and conductivity close to that of etching copper wire, so that it can be directly inkjet-made on a variety of plastic flexible substrates. In addition, the type of substrate also has a great influence on the performance of conductive ink. Once the ink is printed on a substrate that does not match, it will exhibit completely different conductive properties. Therefore, companies such as Precisia and Dupont are developing a series of inks suitable for different printing processes and substrate types. Epoxies Etc of the United States announced a new type of ink suitable for both screen printing and jet printing processes, which can be deposited on various substrates such as kapton® (polyimide film), mylar® (polyester film), glass and ceramics.
According to the global product dynamics and printed electronics demand, it is particularly important to develop nano-silver conductive inks with smaller particle size, higher wiring accuracy, lower production costs, and better matching with processes and materials. For more questions about nano silver conductive ink technology and related applications, please contact the manufacturer yosoar. This article is edited by Cindy.