Electron Transfer in Quantum-Dot-Sensitized ZnO Nanowires: Ultrafast Time-Resolved Absorption and Terahertz Study
- 25 June 2012
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 134 (29) , 12110-12117
- https://doi.org/10.1021/ja3029679
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 (τ = 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.This publication has 43 references indexed in Scilit:
- Tracking the Adsorption and Electron Injection Rates of CdSe Quantum Dots on TiO2: Linked versus Direct AttachmentThe Journal of Physical Chemistry C, 2011
- Photoinduced electron transfer from semiconductor quantum dots to metal oxide nanoparticlesProceedings of the National Academy of Sciences, 2010
- Direct Correlation between Ultrafast Injection and Photoanode Performance in Quantum Dot Sensitized Solar CellsThe Journal of Physical Chemistry C, 2010
- Artificial atoms on semiconductor surfacesProceedings of the National Academy of Sciences, 2010
- Multiple Exciton Collection in a Sensitized Photovoltaic SystemScience, 2010
- CdSe Quantum Dot-Sensitized TiO2 Electrodes: Effect of Quantum Dot Coverage and Mode of AttachmentThe Journal of Physical Chemistry C, 2009
- Core/CdS Quantum Dot/Shell Mesoporous Solar Cells with Improved Stability and Efficiency Using an Amorphous TiO2 CoatingThe Journal of Physical Chemistry C, 2009
- Size-Dependent Electron Injection from Excited CdSe Quantum Dots into TiO2 NanoparticlesJournal of the American Chemical Society, 2007
- Quantum Dot Solar Cells. Harvesting Light Energy with CdSe Nanocrystals Molecularly Linked to Mesoscopic TiO2 FilmsJournal of the American Chemical Society, 2006
- Electron Transfer Dynamics in Quantum Dot/Titanium Dioxide Composites Formed by in Situ Chemical Bath DepositionThe Journal of Physical Chemistry B, 2003