Among systems with only carbon atoms, like diamond and graphite, graphene isrnthe worldâ€™s first two dimensional allotrope of carbon. It is a thin layer of purerncarbon; it is tightly packed layer of carbon atoms that are bonded together in arnhexagonal honeycomb lattice. In more complex terms, it is an allotrope of carbonrnin the structure of a plane of sp2 bonded atoms with a molecular bond length ofrn0.142 nanometres. Layers of graphene stacked on top of each other formrngraphite, with an interplanar spacing of 0.335 nanometers. Charge carriers inrngraphene are discribed by the Dirac-like equation and have zero effective mass.rnIt is the thinnest compound known to man at one atom thick, the lightest materialrnknown, the strongest compound discovered, the best conductor of heat at roomrntemperature and also the best conductor of electricity known. Other notablernproperties of graphene are its unique levels of light absorption at 2.3% of whiternlight. There are probably a dozen methods being used and developed to preparerngraphene of various dimensions, shapes and quality. The mobility of graphene isrnvery high which makes the material very interesting for electronic high frequencyrnapplication. In the near future graphene used on commercial scale onrnoptoelectronics; specifially touch screens, liquid crystal displays (LCD) andrnorganic light emitting diodes (OLEDs) for smart phones, tablet and desktoprncomputers and televisions