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

I. E. Vermier*, W. P. Gomes, B. H. Erné, D. Vanmaekelbergh

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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.

Original languageEnglish
Pages (from-to)2569-2575
Number of pages7
JournalElectrochimica Acta
Volume38
Issue number17
DOIs
Publication statusPublished - Dec 1993

Bibliographical note

Funding Information:
Acknowledgements-&e of the authors (I.E.V.) thanks the N.F.W.O. (National Fund for Scientific Research, Belgium) for financial supporwt hich enabled her to stay at the University of Utrecht (NL) in order to perform the optoelectri-cal impedancem easurements.

Funding

Acknowledgements-&e of the authors (I.E.V.) thanks the N.F.W.O. (National Fund for Scientific Research, Belgium) for financial supporwt hich enabled her to stay at the University of Utrecht (NL) in order to perform the optoelectri-cal impedancem easurements.

Keywords

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

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