Researchers at the University of Texas at Austin in the US say that they have made state-of-the-art flexible graphene field-effect transistors with record current densities and the highest power and conversion gain ever. The transistors also show near-symmetric electron and hole transport, are the most mechanically robust flexible graphene devices fabricated to date, and can be immersed in a liquid without any ill effects.
Graphene is a single, flat sheet of carbon arranged in a honeycombed lattice. It has many unique electronic and mechanical properties, such as extremely high carrier mobility – which means that it is an ideal material for use in ultrafast transistors. The material can also absorb light over a range of wavelengths in the electromagnetic spectrum from the visible to mid-infrared and is highly transparent to light. The fact that it is mechanically flexible while being incredibly strong is good news too.
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