Mott-Schottky analysis of polycrystalline copper(I) bromide in aqueous electrolytes

被引：24

作者：

Knauth, P

Massiani, Y ^{[1
]}

机构：

[1] Univ Aix Marseille 1, Equipe Corros & Electrochim, Lab Physicochim Mat, F-13331 Marseille 3, France

[2] Fac Sci & Tech St Jerome, Met Lab, EDIFIS, CNRS,UMR 6518, F-13397 Marseille 20, France

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1998年 / 442卷 / 1-2期

关键词：

Mott-Schottky analysis; polycrystalline electrodes; aqueous electrolytes;

D O I：

10.1016/S0022-0728(97)00501-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Polycrystalline electrodes of copper(I) bromide were investigated at room temperature in aqueous electrolytes. After long-time stabilisation in a 0.001 M CuSO4 solution, an open-circuit potential of about 0.27 V (SHE) was observed. Nonideal interfacial capacitance values were determined from impedance measurements at frequencies between 100 and 1 kHz. From linear Mott-Schottky plots at electrode potentials between 0.2 and 1.0 V (SHE), we concluded that polycrystalline copper(i) bromide is a p-type semiconductor with a flat-band potential of(1.50 +/- 0.05) V (SHE); an acceptor concentration of (2 +/- 1) 10(16) cm(-3) was found. (C) 1998 Elsevier Science S.A.

引用

页码：229 / 234

页数：6

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