Graphene is another carbon-based nanomaterial that is receiving a lot of attention since Geim and Novoselov were awarded the 2010 Nobel Prize in Physics for its discovery. Graphene is a single atomic layer of carbon, equivalent to a CNT that has been “unrolled” into a two-dimensional structure as shown in Figure 3. Graphene is highly transparent yet conductive, making it an excellent candidate for photovoltaic applications, liquid crystal displays (LCDs) and light-emitting diodes (LEDs)

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