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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/14268

Title: Local boron environment in B-doped nanocrystalline diamond films
Authors: Turner, Stuart
Lu, Ying-Gang
Janssens, Stoffel D.
Da Pieve, Fabiana
Lamoen, Dirk
Verbeeck, Jo
Haenen, Ken
Wagner, Patrick
Van Tendeloo, Gustaaf
Issue Date: 2012
Citation: NANOSCALE, 4 (19), p. 5960-5964
Abstract: Thin films of heavily B-doped nanocrystalline diamond (B:NCD) have been investigated by a combination of high resolution annular dark field scanning transmission electron microscopy and spatially resolved electron energy-loss spectroscopy performed on a state-of-the-art aberration corrected instrument to determine the B concentration, distribution and the local B environment. Concentrations of similar to 1 to 3 at.% of boron are found to be embedded within individual grains. Even though most NCD grains are surrounded by a thin amorphous shell, elemental mapping of the B and C signal shows no preferential embedding of B in these amorphous shells or in grain boundaries between the NCD grains, in contrast with earlier work on more macroscopic superconducting polycrystalline B-doped diamond films. Detailed inspection of the fine structure of the boron K-edge and comparison with density functional theory calculated fine structure energy-loss near-edge structure signatures confirms that the B atoms present in the diamond grains are substitutional atoms embedded tetrahedrally into the diamond lattice.
Notes: [Turner, Stuart; Lu, Ying-Gang; Da Pieve, Fabiana; Lamoen, Dirk; Verbeeck, Jo; Van Tendeloo, Gustaaf] Univ Antwerp, EMAT, B-2020 Antwerp, Belgium. [Janssens, Stoffel D.; Haenen, Ken; Wagner, Patrick] Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. [Janssens, Stoffel D.; Haenen, Ken; Wagner, Patrick] IMEC VZW, IMOMEC, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/14268
DOI: 10.1039/c2nr31530k
ISI #: 000308705900026
ISSN: 2040-3364
Category: A1
Type: Journal Contribution
Validation: ecoom, 2013
Appears in Collections: Research publications

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