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About a greener recipe -------copper nanowires

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Some nanomaterials for Thermochromic Application Some nanomaterials for Thermochromic Application

Thermochromism refers to the phenomenon where a material undergoes color changes under temperature changes. This change is usually caused by changes in the electronic or molecular structure of the material. Its application principle mainly involves t...

About a greener recipe -------copper nanowires

  • June 11,2015.

About a greener recipe -------copper nanowires


Indium tin oxide (ITO) is the most widely used transparent conductor in today’s consumer technology, featuring in solar cells, touch screens and LED displays.


However, alternatives are being sought due to the high cost and finite supply of indium. Films made from silver or copper nanowires are promising candidates, exhibiting high conductivity and optical transparency in addition to being flexible.


Copper nanowires are typically synthesised by the reduction of Cu2+ in solution to its metal form using the highly toxic and dangerously unstable compound, hydrazine. These copper nano wires can then be incorporated into an ink for the roll-to-roll printing of transparent conductors.

Recently sugar has been used to reduce Cu2+ in solution yielding extremely high aspect ratio copper nanowires via a non-toxic route, though their inherent length and flexibility leads to entanglement and agglomeration, precluding their use in liquid inks.

Copper nanowires are attractive as copper is 100 times cheaper than silver and 1000 times more abundant,this economic synthesis is a big step towards their widespread use in the transparent conductor industry

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