Enhanced stability of hydrogen atoms at the graphene/graphane interface of nanoribbons

Autor:	Ao, Z. M., Hernández-Nieves, A. D., Peeters, F. M., Li, S.
Rok vydání:	2010
Předmět:	Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Appl. Phys. Lett. 97, 233109 (2010)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.3525377
Popis:	The thermal stability of graphene/graphane nanoribbons (GGNRs) is investigated using density functional theory. It is found that the energy barriers for the diffusion of hydrogen atoms on the zigzag and armchair interfaces of GGNRs are 2.86 and 3.17 eV, respectively, while the diffusion barrier of an isolated H atom on pristine graphene was only ~0.3 eV. These results unambiguously demonstrate that the thermal stability of GGNRs can be enhanced significantly by increasing the hydrogen diffusion barriers through graphene/graphane interface engineering. This may provide new insights for viable applications of GGNRs. Comment: 13 pages, 1 figure, 2 tables to appear in Appl. Phys. Lett
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1011.4167 Zobrazit plný text záznamu View this record from Arxiv