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Nanoscale phenomena ruling deposition and intercalation of AlN at the graphene/SiC interface
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- Kakanakova-Gueorguieva, Anelia (author)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Gueorguiev, Gueorgui Kostov (author)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Sangiovanni, Davide (author)
- Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten
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- (creator_code:org_t)
- 2020
- 2020
- English.
- In: Nanoscale. - : ROYAL SOC CHEMISTRY. - 2040-3364 .- 2040-3372. ; 12:37, s. 19470-19476
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The possibility for kinetic stabilization of prospective 2D AlN was explored by rationalizing metal organic chemical vapor deposition (MOCVD) processes of AlN on epitaxial graphene. From the wide range of temperatures which can be covered in the same MOCVD reactor, the deposition was performed at the selected temperatures of 700, 900, and 1240 degrees C. The characterization of the structures by atomic force microscopy, electron microscopy and Raman spectroscopy revealed a broad range of surface nucleation and intercalation phenomena. These phenomena included the abundant formation of nucleation sites on graphene, the fragmentation of the graphene layers which accelerated with the deposition temperature, the delivery of excess precursor-derived carbon adatoms to the surface, as well as intercalation of sub-layers of aluminum atoms at the graphene/SiC interface. The conceptual understanding of these nanoscale phenomena was supported by our previous comprehensiveab initiomolecular dynamics (AIMD) simulations of the surface reaction of trimethylaluminum, (CH3)(3)Al, precursor with graphene. A case of applying trimethylindium, (CH3)(3)In, precursor to epitaxial graphene was considered in a comparative way.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
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