RT journal article
T1 Atomic composition of WC/ and Zr/O-terminated diamond Schottky interfaces close to ideality
A1 Piñero Charlo, José Carlos
A1 Araújo Gay, Daniel
A1 Fiori, Alexandre
A1 Traoré, A
A1 Villar Castro, María del Pilar
A1 Eon, David
A1 Muret, Pierre
A1 Pernot, Julien
A1 Teraji, Tokuyuki
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Didáctica
K1 Diamond
K1 Schottky
K1 Oxygen-terminated
K1 TEM
K1 Power devices
AB Electrical and nano-structural properties of Zr and WC-based Schottky power diodes are compared andused for investigating oxide-related effects at the diamond/metal interface. Differences in Schottky bar-rier heights and ideality factors of both structures are shown to be related with the modification of theoxygen-terminated diamond/metal interface configuration. Oxide formation, oxide thickness variationsand interfacial oxygen redistribution, associated with thermal treatment are demonstrated. Ideality fac-tors close to ideality (nWC= 1.02 and nZr= 1.16) are obtained after thermal treatment and are shown to berelated with the relative oxygen content at the surface (OCRWC= 3.03 and OCRZr= 1.5). Indeed, thermaltreatment at higher temperatures is shown to promote an escape of oxygen for the case of the WC diode,while it generates a sharper accumulation of oxygen at the metal/diamond interface for the case of Zrdiode. Therefore, the metal-oxygen affinity is shown to be a key parameter to improve diamond-basedSchottky diodes.
PB Elsevier
SN 0169-4332
YR 2016
FD 2016-04-27
LK http://hdl.handle.net/10498/30203
UL http://hdl.handle.net/10498/30203
LA eng
NO This work was made possible through grants from theSpanishMinistry of Economy and Competitiveness (ref: TEC2014-54357-C2-2-R, HiVolt-nano project) and from the European H2020Program (ref: SEP-210184415, Green Diamond project). Theauthors also wish to thank “Ministerio de Ciencia e Innovación” forthe grants BES-2010-039524 and EEBB-I-13-07696 of the projectTEC2009-11399.
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026