▎ 摘　　要

In this article, we have reproduced the tight-binding pi band dispersion of graphene including up to third nearest-neighbors and also calculated the density of states of pi band within the same model. The aim was to find out a set of parameters descending in order as distance towards third nearest-neighbor increases compared to that of first and second nearest-neighbors with respect to an atom at the origin. Here we have discussed two such sets of parameters by comparing the results with first principle band structure calculation.(1)