Electrodeposition of gold from cyanide solutions on different n-GaAs crystal faces

被引：31

作者：

Depestel, LM ^{[1
]}

Strubbe, K ^{[1
]}

机构：

[1] State Univ Ghent, Lab Fys Chem, B-9000 Ghent, Belgium

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2004年 / 572卷 / 01期

关键词：

gold; n-GaAs; chronoamperometry; atomic force microscopy (AFM); electrodeposition; nucleation;

D O I：

10.1016/j.jelechem.2004.06.012

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The initial stages of the electrodeposition of gold from Au(CN)(2)(-)-solutions on n-GaAs were investigated by means of chrono-amperometry and ex situ atomic force microscopy (AFM). Three different crystal orientations were examined, i.e. (111), ((111) over bar) and (100) n-GaAs. Analysis of the experimental current transients showed that the nucleation mechanism of Au on n-GaAs depends strongly on the surface orientation and the deposition potential, which was confirmed by AFM measurements. This can be explained by differences in chemical composition of the surface. Further, it was observed that the An nuclei grow laterally, which results in a flat morphology. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：195 / 201

页数：7

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