Electron transfer dynamics at p-GaAs/liquid interfaces

Y. Rosenwaks, B. R. Thacker, R. K. Ahrenkiel, A. J. Nozik*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

The rates of photoinduced electron transfer from sulfide-passivated p-GaAs to outer-sphere redox acceptors (ferricenium and cobalticinium) in acetonitrile have been measured using time-correlated single-photon-counting of photoluminescence decay. The characteristic time scales for electron transfer were found to be very fast, manifested by electron transfer velocities ranging from 2 × 105 to 106 cm/s at 1 mM concentrations. These rates are 4-5 orders of magnitude faster than predicted by other workers.

Original languageEnglish
Pages (from-to)10096-10098
Number of pages3
JournalJournal of Physical Chemistry
Volume96
Issue number25
DOIs
StatePublished - 1992
Externally publishedYes

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