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Electron Transfer in Quantum-Dot-Sensitized ZnO Nanowires: Ultrafast Time-Resolved Absorption and Terahertz Study

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Author

Summary, in English

Photoinduced electron injection dynamics from CdSe quantum dots to ZnO nanowires is studied by transient absorption and time-resolved terahertz spectroscopy measurements. Ultrafast electron transfer from the CdSe quantum dots to ZnO is proven to be efficient already on a picoseconds time scale (tau = 3-12 ps). The measured kinetics was found to have a two-component character, whose origin is discussed in detail. The obtained results suggest that electrons are injected into ZnO via an intermediate charge transfer state.

Publishing year

2012

Language

English

Pages

12110-12117

Publication/Series

Journal of the American Chemical Society

Volume

134

Issue

29

Document type

Journal article

Publisher

The American Chemical Society (ACS)

Topic

  • Condensed Matter Physics
  • Atom and Molecular Physics and Optics
  • Chemical Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 1520-5126