Physicists have created a completely transparent flexible metal electrodes


19/05/2013

A group of physicists from China and the United States created a special material "sponge" from which you can make a completely transparent metal electrodes of different lengths and thicknesses, suitable for use as the basis for the production of transparent and flexible electronics. Details were published in the journal Nature Nanotechnology.

Scientists at Stanford University in the U.S. have developed a transparent material with incredible flexibility, which is better than "pure" metal wires capable of conducting a current through a series of experiments with nanoparticles of indium tin oxide (ITO). This compound is a transparent semiconductor. This allows to use the invention in LCD-displays and touch screens of mobile phones.

Physicists were able to get rid of the main disadvantage of these electrodes: they eliminated the loss of property, which typically occurs with little curls and stretching, having developed a unique method of so-called "netting" of wires. Creation begins with the manufacture of the electrode micrometals consisting of a plurality of very thin polymer filaments, and then carried on her nanoparticle coating ITO. The polymer is washed from the "grid" with solvent. In place of the same polymer is flexible and completely transparent "sponge" of indium tin oxide.

This grid is not worse than the plain glass transmits light, and the current carries no worse than most conventional electrodes. Such "sponge" as the researchers note, withstand any mechanical effects: bending, stretching. Losses in conductivity is not happening. This makes them quite as electrodes in the manufacture of fully transparent and flexible electronics over. Production of these gadgets greatly facilitates the use as a starting material not only ITO, but less cheap chemical elements - aluminum and copper.


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