ABSTRACT
Graphene, the thinnest elastic material, has attracted lots of attention due to its outstanding electrical, mechanical, optical, and thermal properties [1-7]. Its superb carrier mobility (up to 200,000 cm2/V·s at room temperature) [2] and low resistivity (up to 30 Ω/◻) [5] suggest the potential to outperform established inorganic materials for certain applications in high-speed transistors and transparent conductive •lms, respectively. Many experts believe that graphene with a 2D •lm format, in contrast to 1D format carbon nanotubes, offers fabrication methods that are compatible with a batch microfabrication process, which is essential to realizing practical devices or systems. In addition, graphene has a distinctive mechanical property with fracture strains of ~25% and Young’s modulus of ~1 TPa [4], which is much better than that of other known electronic materials. As a result, graphene is particularly suitable for unusual format electronic systems such as ¦exible, conformal, and stretchable electronic devices with demanding high mechanical requirements. In particular,
5.1 Introduction .................................................................................................. 117 5.2 Large-Area Production of Graphene Thin Films ........................................ 118
5.2.1 Large-Area Graphene Synthesis ....................................................... 118 5.2.2 Large-Area Graphene Transfer Methods .......................................... 121
5.3 Field-Effect Transistors ................................................................................124 5.3.1 RF Transistor ....................................................................................124 5.3.2 Flexible Graphene-Based Transistor................................................. 128
5.4 Transparent Electrodes ................................................................................. 132 5.4.1 Touch-Screen Panels ......................................................................... 134 5.4.2 Electrodes for Organic Devices ........................................................ 135
5.5 Graphene-Based Gas Barrier Film ............................................................... 139 5.6 Concluding Remarks .................................................................................... 144 References .............................................................................................................. 144
graphene has a molecular structure basically similar to that of organic electronic materials, and the strong interaction between graphene and organic materials could result in excellent interface contact. This suggests that graphene is a good candidate as a transparent electrode for ¦exible organic devices such as organic photovoltaics and organic light-emitting diodes [8-15].
