Cyclic voltammetry at semiconductor photoelectrodes. 1. Ideal surface-attached redox couples with ideal semiconductor behavior

Patrick G. Santangelo, Gordon M. Miskelly, Nathan S Lewis

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Working curves for the cyclic voltammetric behavior of semiconductor electrodes have been generated by consideration of a model electrode circuit. The circuit consists of an ideal photodiode in series with a metal electrode. The electroactive material is considered to be an ideally behaving, surface-attached redox couple. The solution for the diode/electrode current-voltage characteristic has been solved numerically. Simulations have been performed under varying levels of illumination and for different values of the diode barrier height, the voltage scan rate, and the amount of electroactive material. Chopped scans have also been simulated, where the forward scan is in the light and the reverse scan is in the dark. Emphasis has been placed on modeling cyclic voltammetric data under common experimental conditions, in order to provide a basis for comparison with experiments in the literature.

Original languageEnglish
Pages (from-to)6359-6367
Number of pages9
JournalJournal of Physical Chemistry
Volume92
Issue number22
Publication statusPublished - 1988

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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