Electron Transfer in Quantum-Dot-Sensitized ZnO Nanowires: Ultrafast Time-Resolved Absorption and Terahertz Study
Författare
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.
Avdelning/ar
Publiceringsår
2012
Språk
Engelska
Sidor
12110-12117
Publikation/Tidskrift/Serie
Journal of the American Chemical Society
Volym
134
Issue
29
Dokumenttyp
Artikel i tidskrift
Förlag
The American Chemical Society (ACS)
Ämne
- Condensed Matter Physics
- Atom and Molecular Physics and Optics
- Chemical Sciences
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1520-5126