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

Zidek, Karel LU ; Zheng, Kaibo LU ; Ponseca, Carlito LU ; Messing, Maria LU ; Wallenberg, Reine LU ; Chabera, Pavel LU ; Qenawy, Mohamed LU ; Sundström, Villy LU and Pullerits, Tönu LU (2012) In Journal of the American Chemical Society 134(29). p.12110-12117
Abstract
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.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of the American Chemical Society
volume
134
issue
29
pages
12110 - 12117
publisher
The American Chemical Society
external identifiers
  • wos:000306724500058
  • scopus:84864271718
ISSN
1520-5126
DOI
10.1021/ja3029679
language
English
LU publication?
yes
id
7d2e7b85-888c-4d44-bc81-b73f6b0ed9dd (old id 3070267)
date added to LUP
2012-09-26 08:06:31
date last changed
2017-10-29 03:47:48
@article{7d2e7b85-888c-4d44-bc81-b73f6b0ed9dd,
  abstract     = {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.},
  author       = {Zidek, Karel and Zheng, Kaibo and Ponseca, Carlito and Messing, Maria and Wallenberg, Reine and Chabera, Pavel and Qenawy, Mohamed and Sundström, Villy and Pullerits, Tönu},
  issn         = {1520-5126},
  language     = {eng},
  number       = {29},
  pages        = {12110--12117},
  publisher    = {The American Chemical Society},
  series       = {Journal of the American Chemical Society},
  title        = {Electron Transfer in Quantum-Dot-Sensitized ZnO Nanowires: Ultrafast Time-Resolved Absorption and Terahertz Study},
  url          = {http://dx.doi.org/10.1021/ja3029679},
  volume       = {134},
  year         = {2012},
}