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Photo–Initiated Electron–Transfer at the Interface between Anatase TiO2 Nanocrystallites and Transition–Metal Polypyridyl Compounds: Recent Advances

  1. Shane Ardo,
  2. Gerald J. Meyer

Published Online: 18 JAN 2011

DOI: 10.1002/0470862106.ia820

Encyclopedia of Inorganic Chemistry

Encyclopedia of Inorganic Chemistry

How to Cite

Ardo, S. and Meyer, G. J. 2011. Photo–Initiated Electron–Transfer at the Interface between Anatase TiO2 Nanocrystallites and Transition–Metal Polypyridyl Compounds: Recent Advances. Encyclopedia of Inorganic Chemistry. .

Author Information

  1. Johns Hopkins University, Baltimore, MD, USA

Publication History

  1. Published Online: 18 JAN 2011

Abstract

Molecular control of solar light harvesting and interfacial charge transfer at mesoporous, nanocrystalline semiconductor thin films are described. Light absorption by transition-metal coordination compounds anchored to wide band-gap semiconductors can initiate electron-transfer processes that ultimately reduce the semiconductor and oxidize the coordination compound. Such photo-induced charge separation is a key step for solar energy conversion. Three different interfacial charge-separation mechanisms are discussed in addition to regeneration processes wherein a mobile donor donates an electron to the oxidized coordination compound. Inorganic chemistry plays a central role in this approach to solar energy conversion, which may ultimately be optimized for practical applications.

Keywords:

  • dye-sensitized solar cells;
  • transition-metal coordination compounds;
  • mesoporous anatase TiO2