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The anodic dissolution of InP studied by the optoelectrical impedance method—2. Interaction between anodic and chemical etching of InP in iodic acid solutions

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1993 Netherlands English Publisher:Elsevier BVJournal:Electrochimica Acta, volume 38, pages 2,569-2,575 (issn: 0013-4686,

Authors: Walter Gomes; Ben H. Erné; I.E. Vermier; Daniel Vanmaekelbergh;

doi: 10.1016/0013-4686(93)80154-r

The anodic dissolution of InP studied by the optoelectrical impedance method—2. Interaction between anodic and chemical etching of InP in iodic acid solutions

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Abstract

The photocurrent enhancement by HIO3 at the n-InP anode was studied by a combination of dc and optoelectrical impedance measurements. It was found that this enhancement is connected with the anodic dissolution of the semiconductor itself. A reaction scheme is proposed for the dissolution mechanism, involving two competing reaction pathways, ie a mixed chemical-electrochemical and a purely electrochemical one, each with chemically different decomposition intermediates.

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Netherlands

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Keywords

anodic dissolution mechanisms., indium phosphide, optoelectrical impedance spectroscopy, photoelectrochemistry

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