Tuning phononic and electronic contributions of thermoelectric in defected S-shape graphene nanoribbons.

ABSTRACT: Thermoelectrics as a way to use waste heat, is essential in electronic industries, but its low performance at operational temperatures makes it inappropriate in practical applications. Tailoring graphene can change its properties. In this work, we are interested in studying the transport properties of S-shape graphene structures with the single vacancy (SV) and double vacancy (DV) models. The structures are composed of a chiral part, which is an armchair graphene nanoribbon, and two zigzag graphene ribbons. We investigate the changes in the figure of merit by means of the Seebeck coefficient, electronic conductance, and electronic and phononic conductances with the vacancies in different device sizes. The transport properties of the system are studied by using the non-equilibrium Green's f

SUBMITTER: Bazrafshan MA 

PROVIDER: S-EPMC9626499 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature