A QUANTUM ESPRESSO STUDY OF NITROGEN DOPED GRAPHENE USING DENSITY FUNCTIONAL THEORY
Keywords:
Graphene, Band Structure, Density of State, Projected Density of StateAbstract
Nitrogen doped graphene has attracted attention because of the abundance of nitrogen and high
performances of graphene. Graphene is an allotrope of carbon that takes the shape of a plane of
sp2-bonded atoms with a molecular bond length of 0.142 nm. Despite the material's unusual
characteristics, such as being the thinnest known material but the strongest, and a brilliant
conductor of both heat and electricity, it lacks a band gap.Quantum Espresso was used to
investigate the structural and electronic properties of graphene nanosheet. It was observed that
pure graphene produces zero energy gap while 0.32 when the hydrogen atom was doped.
Different patterns were observed in Total Density of State (TDOS) and Projected Density of
State (PDOS) due to the doping effect.