Effects of controlled anodic treatments on electrochemical behaviour of boron doped diamond

被引:31
作者
Girard, H. A. [1 ]
Simon, N.
Ballutaud, D.
de La Rochefoucauld, E.
Etcheberry, A.
机构
[1] Univ Versailles, Inst Lavoisier Versailles, St Quentin en Yvelines, France
[2] CNRS, Grp Etud Mat Condensee, Meudon, France
关键词
diamond; anodic treatment; hydrogenated diamond; charge transfer; superficial conductive layer; wettability;
D O I
10.1016/j.diamond.2006.12.002
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The electrochemical behaviour of as-deposited and anodically treated samples is studied by cyclic voltammetry in the presence of redox couple (Ce4+/Ce3+). Two kinds of anodic pre-treatments are performed, playing on the current density and on the duration of the galvanostatic step. Mott-Schottky plots are reported, and related to the energy band diagram evolution of the electrodes after anodic processes. The electrochemical behaviour modification is correlated to the surface wettability evolution and flat band potential shift. For mild anodic pre-treatments, a conservation of the superficial conductive layer (SCL), known to exist on hydrogen-terminated boron doped diamond (BDD), is proposed, while for strong treatments, the SCL disappears. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:888 / 891
页数:4
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