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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 1240oC. 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 …
Royal Society of Chemistry
Publication date: 
1 Jan 2020

Anelia Kakanakova, Gueorgui K Gueorguiev, Davide G Sangiovanni, Nattamon Suwannaharn, Ivan G Ivanov, Ildikó Cora, Béla Pécz, Giuseppe Nicotra, Filippo Giannazzo

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