Evidence for graphite-like hexagonal AlN nanosheets epitaxially grown on single crystal Ag(111)

Journal Article · Mon Dec 16 00:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4851239· OSTI ID:22217762

Tsipas, P.; Kassavetis, S.; Tsoutsou, D.; Xenogiannopoulou, E.; Golias, E.; Giamini, S. A.; Dimoulas, A. ^[1]; Grazianetti, C.; Fanciulli, M. ^[2]; Chiappe, D.; Molle, A. ^[2]

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1. National Center for Scientific Research “Demokritos,” 15310 Athens (Greece)
2. Laboratorio MDM, IMM-CNR, I-20864, Agrate Brianza (MB) (Italy)

Ultrathin (sub-monolayer to 12 monolayers) AlN nanosheets are grown epitaxially by plasma assisted molecular beam epitaxy on Ag(111) single crystals. Electron diffraction and scanning tunneling microscopy provide evidence that AlN on Ag adopts a graphite-like hexagonal structure with a larger lattice constant compared to bulk-like wurtzite AlN. This claim is further supported by ultraviolet photoelectron spectroscopy indicating a reduced energy bandgap as expected for hexagonal AlN.

• OSTI ID: 22217762
• Journal Information: Applied Physics Letters, Vol. 103, Issue 25; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
36 MATERIALS SCIENCE
ALUMINIUM NITRIDES
ELECTRON DIFFRACTION
ENERGY GAP
FABRICATION
GRAPHITE
LATTICE PARAMETERS
LAYERS
MOLECULAR BEAM EPITAXY
MONOCRYSTALS
NANOSTRUCTURES
PHOTOELECTRON SPECTROSCOPY
PLASMA
SCANNING TUNNELING MICROSCOPY
SEMICONDUCTOR MATERIALS
ULTRAVIOLET RADIATION