Open AccessFirst-principles study of adsorption effect of A-Z-A graphene nanoribbons field effect transistor
Author(s) -
秦军瑞,
陈书明,
张超,
陈建军,
梁斌,
刘必慰
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.023102
Subject(s) - adsorption , materials science , graphene nanoribbons , graphene , field effect transistor , transistor , chemical physics , nanotechnology , chemistry , physics , voltage , quantum mechanics
By performing first-principles calculations, we demonstrate the electronic structure, the transport properties, and the adsorption effect of A-Z-A graphene nanoribons field effect transistor. It is concluded that the pure A-Z-A GNR-FET has typical bipolar characteristics, and energy gaps will become smaller due to the adsorbed molecule. For the adsorption of H, N2, NO2, H2O, SO2, O2 and NO, A-Z-A GNR-FET remains typical bipolar characteristic, but shows a little difference in transport property after it has adsorbed different types of molecles. For the adsorption of OH, transport property changes totally and does not have a bipolar characteristic any more. These results may contribute to the implementation of gas detector based on GNRs and the design of GNR-FET applied in complex environments.