▎ 摘　　要

The field emission properties of graphene nanosheets were remarkably improved by decorating their surface with tin (Sn) nanoparticles. The Sn nanoparticles were attached effectively on the surface of graphene via a chemical vapor deposition during graphene oxide reduction procedure. The Sn-decorated graphene (Sn-Gr) sheets showed lower turn-on voltage and higher emission stability compared with pristine graphene. The improved field emission properties of Sn-Gr sheets were mainly attributed to the Sn nanoparticles which increased the field enhancement factor and the density of emission sites. (C) 2012 Elsevier B.V. All rights reserved.