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Formation of a Quasi‐Free‐Standing Single Layer of Graphene and Hexagonal Boron Nitride on Pt(111) by a Single Molecular Precursor
Author(s) -
Nappini Silvia,
Píš Igor,
Menteş Tevfik Onur,
Sala Alessandro,
Cattelan Mattia,
Agnoli Stefano,
Bondino Federica,
Magnano Elena
Publication year - 2016
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201503591
Subject(s) - materials science , graphene , nanomesh , dehydrogenation , borane , substrate (aquarium) , x ray photoelectron spectroscopy , boron , layer (electronics) , nanotechnology , boron nitride , heterojunction , chemical engineering , optoelectronics , chemistry , oceanography , organic chemistry , geology , engineering , catalysis , biochemistry
It is shown that on Pt(111) it is possible to prepare hexagonal boron nitride ( h ‐BN) and graphene (G) in‐plane heterojunctions from a single molecular precursor, by thermal decomposition of dimethylamine borane (DMAB). Photoemission, near‐edge X‐ray absorption spectroscopy, low energy electron microscopy, and temperature programmed desorption measurements indicate that the layer fully covers the Pt(111) surface. Evidence of in‐plane layer continuity and weak interaction with Pt substrate has been established. The findings demonstrate that dehydrogenation and pyrolitic decomposition of DMAB is an efficient and easy method for obtaining a continuous almost freestanding layer mostly made of G, h ‐BN with only a low percentage (<3%) of impurities (B and N‐doped G domains or C‐doped h ‐BN or boron carbonitride, BCN at the boundaries) in the same 2D sheet on a metal substrate, such as Pt(111), paving the way for the advancement of next‐generation G‐like‐based electronics and novel spintronic devices.