Impedance and Mott-Schottky analysis of a Pr0.15Ce0.85O2-x solid solution

被引：0

作者：

Bouchet, R ^{[1
]}

Knauth, P ^{[1
]}

Stefanik, T ^{[1
]}

Tuller, HL ^{[1
]}

机构：

[1] Univ Aix Marseille 1, CNRS, MADIREL, Ctr Saint Jerome,UMR 6121, F-13397 Marseille 20, France

来源：

SOLID STATE IONICS-2002 | 2003年 / 756卷

关键词：

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The semiconductor properties of a praseodymium-cerium oxide solid solution with composition Pr0.15Ce0.85O2-x (PCO) were investigated by d.c. current-voltage and bias-dependent impedance measurements in aqueous solution. The solution data were compared with impedance values of dry cells in air. A Mott-Schottky analysis of the PCO-solution interface capacitance showed p-type semiconductivity, a flat-band potential E-fb = (2.0 +/- 0.1) V/NHE and an ionized, acceptor density N-A = 3 10(17) cm(-3). Using these data, an electron hole mobility mu(h) approximate to 10(-5) cm(2) V-1 s(-1) was calculated pointing to a small polaron conduction mechanism with a hopping energy (E-h = 0.4 eV).

引用

页码：169 / 174

页数：6

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