The scaling up of graphene transistors just became one step closer with a piece of research conducted by a team at Cambridge University. The inspiration for this advance in flexible electronics came from F. Torrisi et al in the Department of Engineering, whose work on producing a graphene based ink by liquid phase exfoliation of graphite paved the way for printing thin-film transistors and conductive patterns. The new technique reduced the number of fabrication steps in the process of production and can be used to fabricate other devices such as photovoltics, organic LED’s, and display screens. The authors of the study suggest that the process has a number of key advantages,
“Inkjet printing (of graphene) is versatile, involves a limited number of process steps, is amenable for mass production and can deposit controlled amounts of material.”
The graphene ink is combined with one of the most commonly used organic polymers for inkjet printing. The results demonstrate not only the viability of large scale production possibilities but also indicate a significant level of performance improvement on previous techniques.
The full research paper can be read here. http://arxiv.org/PS_cache/arxiv/pdf/1111/1111.4970v1.pdf