University of Glasgow researchers make graphene production breakthrough

University of Glasgow researchers make graphene production breakthrough

Issued: Wed, 18 Nov 2015 10:01:00 GMT

Graphene has been hailed as a wonder material since it was first isolated from graphite in 2004. Graphene is just a single atom thick but it is flexible, stronger than steel, and capable of efficiently conducting heat and electricity.Ravinder Dahiya

Researchers at the University of Glasgow have now found a way to produce large sheets of graphene using the same cheap type of copper used to manufacture lithium-ion batteries found in many household devices.

In a new paper published today (Wednesday 18 November) in the journal Scientific Reports, a team led by Dr Ravinder Dahiya explain how they have been able to produce large-area graphene around 100 times cheaper than ever before.

Graphene is often produced by a process known as chemical vapour deposition, or CVD, which turns gaseous reactants into a film of graphene on a special surface known as a substrate.

The research team used a similar process to create high-quality graphene across the surface of commercially-available copper foils of the type often used as the negative electrodes in lithium-ion batteries. The ultra-smooth surface of the copper provided an excellent bed for the graphene to form upon.

They found that the graphene they produced offered a stark improvement in the electrical and optical performance of transistors which they made compared to similar materials produced from the older process.



“Much of my own research is in the field of synthetic skin. Graphene could help provide an ultraflexible, conductive surface which could provide people with prosthetics capable of providing sensation in a way that is impossible for even the most advanced prosthetics today.

“It’s a very exciting discovery and we’re keen to continue our research.”

The research was conducted by the University of Glasgow in partnership with colleagues at Bilkent University in Turkey.

The team’s paper, titled ‘Synthesis of Large Area Graphene for High Performance in Flexible Optoelectronic Devices’, is published in Scientific Reports. The research was funded by the European Commission and the Engineering and Physical Sciences Council (EPSRC).

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