Injection time in the metaloxide-molecule interface calculated within the tight-binding model

Åsa Petersson, Mark Ratner, Hans O. Karlsson

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48 Citations (Scopus)


The injection time τ of the electron transfer from an excited electronic state of a dye molecule to a semiconducting surface is studied. An analytical expression for the injection time as a function of excitation energy is derived. The semiconductor is described as a one-dimensional chain in the tight-binding approximation, and the dye molecule is included via the coupling to the semiconductor. For a TiO2 semiconductor, the injection time is estimated to be approximately 5 fs. The results support and characterize recent experimental studies.

Original languageEnglish
Pages (from-to)8498-8502
Number of pages5
JournalJournal of Physical Chemistry B
Issue number35
Publication statusPublished - Sep 7 2000


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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