Journal
COMPUTATIONAL AND THEORETICAL CHEMISTRY
Volume 1008, Issue -, Pages 20-26Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.comptc.2012.12.011
Keywords
Nanostructure; DFT; Theoretical study; Chemisorption; Aluminum nitride
Categories
Ask authors/readers for more resources
Using density functional theory, the adsorption of NO2 molecule on an AlN nanocone is investigated in terms of energetic, structural, electronic and field emission properties. The NO2 is preferentially chemisorbed on the pentagon of the cone apex, releasing energy of 65.43 kcal/mol. The AlNC is transformed from an intrinsic semiconductor with E-g of 2.86 eV to extrinsic p-type one with smaller E-g of 1.62-2.34 eV upon adsorption processes. The largest reduction of E-g is predicted when the NO2 molecule is adsorbed on a hexagonal ring of the AlNC containing homonuclear N-N bonds. We conclude that the AlNC may transform the presence of the NO2 molecule into an electrical signal. The emitted electron current density from the AlNC surface may be also decreased in the presence of NO2 molecules. We also found that the electronic sensitivity of AlNC to NO2 molecule may be tuneable in the presence of an external electric field. (C) 2012 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available