A group of scientists from the Irish Science Foundation Ireland, under the auspices of the research organization Advanced Materials and BioEngineering Research, has developed an interesting transistor printing technology. It is claimed that this is the first technology in the industry that allows you to print a planar transistor "standard" methods. A similar process can be used to print other electronics, including solar panels (photocells), LEDs and more. Obviously, such an approach promises to make electronics production substantially cheaper.
Development data are published in the April issue of the journal Science. From what is known - the transistor is printed layer by layer using graphene as a drain, source and gate electrodes. The channel of such a transistor consists of a metal dichalcogenide in the face of tungsten diselenide, in which a high mobility of electrons), and the insulating material is boron nitride.
The gate of the transistor is an electrolytic valve with an ionic liquid. A similar shutter for transistors in 2013 was proposed by IBM. Under the influence of the electromagnetic field ions from the liquid move into the oxide layer below it and it becomes conductive. It is noted that compared to conventional thin-film transistors, the proposed solution allows to pass more current at a lower operating voltage.
Printing transistors will allow you to equip with information displays and electronics packaging of perishable products, medicines, bank cards, cash money itself, and much more. The cost of such a package promises to be at a bargain price.