Improving transport properties of armchair graphene nanoribbon by warping: A first principle study

Semiconductor material is concerned with mobility and on/off current ratio to achieve a high figure of merit for electronic device application. The aim of this study was to demonstrate deformation effect on armchair graphene nanoribbon (AGNR) by warping for improving its transport properties using first principle calculation coupled with the non-equilibrium green function (NEGF) method. Through simulation, significant improvement by 50% in on current are observed when the AGNR is warp upward. In addition, the warping effect is more noticeable in the transport properties compared to the electronic properties. This alternative geometry of AGNR provide ways to minimize the well-known drawbacks normally associated with the short channel effect as device dimension scaled down and expand the possibility of realizing their benefit particularly in high speed device application.