Document Type : Research

Authors

1 Department of Physics, Borujerd Branch, Islamic Azad University, Borujerd, Iran

2 Department of mathematics, Borujerd Branch, Islamic Azad University, Borujerd, Iran

Abstract

First principles calculation, we investigate electronic and optical properties of graphene with B, N, O and F adsorption. For the adatom studied the distortion of the graphene layer is quite significant and cause to change hybridization from sp2 to sp3 also we found that B, F and O adsorptions are n-type, p-type and direct semiconductor respectively while N adsorption has a metal behavior. N absorbed graphene show magnetic moment, while B, O and F absorbed graphene exhibit no magnetic moment. The absorption spectrum of monolayer graphene have been calculated for the cases of in plane , out of plane  polarization of light and 45° to the plane of graphene layer and compared with atom adsorption on graphene and it was observed that For the case of  the graphene is an optical sensor for finding F atom and in the case of  it is an optical sensor to find B atom in environment.

Keywords

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