Portal de Periódicos da CAPES

Artigo Produção Nacional Revisado por pares

BIBTEX RIS

Graphene nanoribbon thermopower as a tool for molecular spectroscopy

2013; American Institute of Physics; Volume: 114; Issue: 15 Linguagem: Inglês

10.1063/1.4826266

1520-8850

Luis Rosales, César Núñez, M. Pacheco, A. Latgé, P. A. Orellana,

Advanced Thermoelectric Materials and Devices

In this work, we study thermoelectric properties of graphene nanoribbons with side-attached organic molecules. By adopting a single-band tight binding Hamiltonian and the Green's function formalism, we calculated the transmission and Seebeck coefficients for different hybrid systems. The corresponding thermopower profiles exhibit a series of sharp peaks at the eigenenergies of the isolated molecule indicating that the system can be proposed as a molecular thermo-device. We have studied the effects of the temperature on the thermoelectric response, and considered random configurations of molecule distributions, in different disorder regimes. We have found that the main features of the thermopower are robust under temperature and disorder.