Size-dependent thermal capacity of graphene nano-ribbons

Abstract

The “discretized” version of the two-dimensional “Generalized Skettrup Model” is presented and implemented at simulations on the effect of alterations in the aspect ratio(s) of rib lengths on temperature-dependent harmonic and anharmonic specific lattice thermal capacities of rectangular graphene nano-ribbons. The obtained simulation results are discussed in comparison with appropriate experimental data and their counterparts reported elsewhere for the square graphene flakes [V. Ligatchev, ECS J. Solid State Sci. Technol. 9, 093014 (2020); V. Ligatchev, “Generalized Skettrup Model” and Lattice Thermal Capacity of Spatially Non-Homogeneous and Low-Dimensional Semiconductors and Insulators. Lambert Academic Publishing, Saarbrücken, Germany, 2021].