RT annotation
T1 TEM study of defects versus growth orientations in heavily boron-doped diamond
A1 Lloret Vieira, Fernando Manuel
A1 Araújo Gay, Daniel
A1 Alegre Salguero, María de la Paz
A1 González Leal, Juan María
A1 Villar Castro, María del Pilar
A1 Eon, David
A1 Bustarret, Etienne
A2 Física Aplicada
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 boron
K1 chemical vapor deposition
K1 defects
K1 diamond
K1 dopoing
K1 transmission electron microscopy
AB Heavy boron-doping layer in diamond can be responsible for the generation of extended defects during the growth processes (Blank et al., Diam. Relat. Mater. 17, 1840 (2008)). As claimed recently (Alegre et al., Appl. Phys. Lett. 105, 173103 (2014)), boron pair interactions rather than strain-related misfit seems to be responsible for such dislocation generation. In the present work, electron microscopy observations are used to study the defects induced by heavy boron doping in different growth plane orientations. Facets of pyramidal Hillocks (PHs) and pits provide access to non-conventional growth orientations where boron atoms incorporation is different during growth. TEM analysis on FIB prepared lamellas confirm that also for those growth orientations, the generation of dislocations occurs within the heavily boron-doped diamond layers. Stacking faults (SFs) have been also observed by high resolution transmission electron microscopy (HREM). From the invisibility criteria, using weak beam (WB) observation, 1/2[110] and 1/6[112], Burgers vectors have been identified. Their generation behavior confirms the mechanism reported by Alegre et al. where local in-plane strain effects induced at the growing surface of the diamond lattice by the neighboring of several boron atoms cause the generation of such extended defects.
SN 1862-6319
YR 2015
FD 2015
LK http://hdl.handle.net/10498/30522
UL http://hdl.handle.net/10498/30522
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026