ABSTRACT
In the last •ve or six years, the truly 2-dimensional material graphene has attracted strong attention from physicists and materials scientists around the world. The awarding of the 2010 Nobel Prize in Physics to Andre Geim and Konstantin Novoselov “for groundbreaking experiments regarding the two-dimensional material graphene” [1,2] has further intensi•ed the enormous interest of the scienti•c community for this extraordinary material [3-5]. Graphene has been and is being proposed for a wide range of applications, •eld emission being one of those exciting device applications. Field emitters have found a long list of practical device applications as sources of electrons, starting with electron microscopes and hand-held miniature x-ray sources to high-powered microwave generators and •eld emission displays [6,7]. This chapter introduces to the reader the basics of the •eld emission process, followed by a detailed discussion of the progress and prospect of graphene for •eld emission applications.
