Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Cobalt-assisted recrystallization and alignment of pure and doped graphene. / Usachov, Dmitry Yu.; Bokai, Kirill A.; Marchenko, Dmitry E.; Fedorov, Alexander V.; Shevelev, Viktor O.; Vilkov, Oleg Yu.; Kataev, Elmar Yu.; Yashina, Lada V.; Ruehl, Eckart; Laubschat, Clemens; Vyalikh, Denis V.
в: Nanoscale, Том 10, № 25, 07.07.2018, стр. 12123-12132.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Cobalt-assisted recrystallization and alignment of pure and doped graphene
AU - Usachov, Dmitry Yu.
AU - Bokai, Kirill A.
AU - Marchenko, Dmitry E.
AU - Fedorov, Alexander V.
AU - Shevelev, Viktor O.
AU - Vilkov, Oleg Yu.
AU - Kataev, Elmar Yu.
AU - Yashina, Lada V.
AU - Ruehl, Eckart
AU - Laubschat, Clemens
AU - Vyalikh, Denis V.
PY - 2018/7/7
Y1 - 2018/7/7
N2 - Recrystallization of bulk materials is a well-known phenomenon, which is widely used in commercial manufacturing. However, for low-dimensional materials like graphene, this process still remains an unresolved puzzle. Thus, the understanding of the underlying mechanisms and the required conditions for recrystallization in low dimensions is essential for the elaboration of routes towards the inexpensive and reliable production of high-quality nanomaterials. Here, we unveil the details of the efficient recrystallization of one-atom-thick pure and boron-doped polycrystalline graphene layers on a Co(0001) surface. By applying photoemission and electron diffraction, we show how more than 90% of the initially misoriented graphene grains can be reconstructed into a well-oriented and single-crystalline layer. The obtained recrystallized graphene/Co interface exhibits high structural quality with a pronounced sublattice asymmetry, which is important for achieving an unbalanced sublattice doping of graphene. By exploring the kinetics of recrystallization for native and B-doped graphene on Co, we were able to estimate the activation energy and propose a mechanism of this process.
AB - Recrystallization of bulk materials is a well-known phenomenon, which is widely used in commercial manufacturing. However, for low-dimensional materials like graphene, this process still remains an unresolved puzzle. Thus, the understanding of the underlying mechanisms and the required conditions for recrystallization in low dimensions is essential for the elaboration of routes towards the inexpensive and reliable production of high-quality nanomaterials. Here, we unveil the details of the efficient recrystallization of one-atom-thick pure and boron-doped polycrystalline graphene layers on a Co(0001) surface. By applying photoemission and electron diffraction, we show how more than 90% of the initially misoriented graphene grains can be reconstructed into a well-oriented and single-crystalline layer. The obtained recrystallized graphene/Co interface exhibits high structural quality with a pronounced sublattice asymmetry, which is important for achieving an unbalanced sublattice doping of graphene. By exploring the kinetics of recrystallization for native and B-doped graphene on Co, we were able to estimate the activation energy and propose a mechanism of this process.
KW - ATOMIC-STRUCTURE
KW - GROWTH
KW - SURFACES
KW - NI(111)
KW - CARBON
UR - http://www.mendeley.com/research/cobaltassisted-recrystallization-alignment-pure-doped-graphene-1
U2 - 10.1039/c8nr03183e
DO - 10.1039/c8nr03183e
M3 - статья
VL - 10
SP - 12123
EP - 12132
JO - Nanoscale
JF - Nanoscale
SN - 2040-3364
IS - 25
ER -
ID: 33793955