Open Science Research Excellence
%0 Journal Article
%A Zeinab Jokar and  Mohammad Reza Moslemi
%D 2015 
%J  International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering
%B World Academy of Science, Engineering and Technology
%I International Science Index 98, 2015
%T Effects of Position and Shape of Atomic Defects on the Band Gap of Graphene Nano Ribbon Superlattices
%U http://waset.org/publications/10000474
%V 98
%X In this work, we study the behavior of introducing
atomic size vacancy in a graphene nanoribbon superlattice. Our
investigations are based on the density functional theory (DFT) with
the Local Density Approximation in Atomistix Toolkit (ATK). We
show that, in addition to its shape, the position of vacancy has a
major impact on the electrical properties of a graphene nanoribbon
superlattice. We show that the band gap of an armchair graphene
nanoribbon may be tuned by introducing an appropriate periodic
pattern of vacancies. The band gap changes in a zig-zag manner
similar to the variation of band gap of a graphene nanoribbon by
changing its width.

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