Electrochemical behaviour of (111) B-Doped Polycrystalline Diamond: Morphology/surface conductivity/activity assessed by EIS and CS-AFM

Autor: Alain Pailleret, Hubert Cachet, Claude Deslouis, J. de Sanoit, Philippe Bergonzo, Christine Mer, Samuel Saada
Přispěvatelé: Laboratoire Interfaces et Systèmes Electrochimiques (LISE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Capteurs Diamant (LCD-LIST), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST)
Rok vydání: 2011
Předmět:
Synthetic diamond
thin film
Analytical chemistry
02 engineering and technology
Conductivity
010402 general chemistry
Electrochemistry
01 natural sciences
Redox
law.invention
Surface conductivity
electrochemical activation
diamond
law
Electrical resistivity and conductivity
Materials Chemistry
[CHIM]Chemical Sciences
Low conductivity
[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
Electrical and Electronic Engineering
EIS
electrochemical oxidative treatment
Chemistry
Mechanical Engineering
CS-AFM
General Chemistry
021001 nanoscience & nanotechnology
Activity
0104 chemical sciences
Electronic
Optical and Magnetic Materials
Dielectric spectroscopy
hydrogen plasma
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Boron-doped diamond electrode
Cyclic voltammetry
0210 nano-technology
Homogeneous superficial conductivity
Chemical Vapor Deposition (CVD)
Zdroj: Diamond and Related Materials
Diamond and Related Materials, 2011, 20 (1), pp.1-10. ⟨10.1016/j.diamond.2010.10.005⟩
Diamond and Related Materials, Elsevier, 2011, 20 (1), pp.1-10. ⟨10.1016/j.diamond.2010.10.005⟩
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2010.10.005
Popis: International audience; Electrochemical activity, morphology and surface electrical conductivity of Boron-Doped Polycrystalline Diamond films prepared by MPCVD have been investigated. Heterogeneous apparent rate constants of three different redox systems, [Fe(CN)(6)](3-/4-), [IrCl(6)](2-/3-) and [Ru(NH(3))(6)](3+/2+) have been measured by both Cyclic Voltammetry and Electrochemical Impedance Spectroscopy on < 100 > textured films with a predominance of (111) faces: first measurements have been done with [Fe(CN)(6)](3-/4-) only on as grown samples, and secondly after a mild electrochemical pretreatment the three redox systems have been investigated. "As-grown" samples showed a moderate average activity which was related to the presence of a minority of electronically conducting areas among insulating zones. Electrochemical treatment in neutral conditions substantially increased the activity and heterogeneous apparent rate constants k(app) for the three couples were measured in the range of 10(-2) cm s(-1) with a good stability in time. Current-sensing AFM images performed ex situ showed that the electrochemically pre-treated material presented a high superficial conductivity whereas the grown sample showed major area of low conductivity.
Databáze: OpenAIRE
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