Photosensitization of TiO2 Nanostructures with CdS Quantum Dots: Particulate versus Tubular Support Architectures
Top Cited Papers
- 27 February 2009
- journal article
- research article
- Published by Wiley in Advanced Functional Materials
- Vol. 19 (5) , 805-811
- https://doi.org/10.1002/adfm.200801173
Abstract
TiO2 nanotube arrays and particulate films are modified with CdS quantum dots with an aim to tune the response of the photoelectrochemical cell in the visible region. The method of successive ionic layer adsorption and reaction facilitates size control of CdS quantum dots. These CdS nanocrystals, upon excitation with visible light, inject electrons into the TiO2 nanotubes and particles and thus enable their use as photosensitive electrodes. Maximum incident photon to charge carrier efficiency (IPCE) values of 55% and 26% are observed for CdS sensitized TiO2 nanotube and nanoparticulate architectures respectively. The nearly doubling of IPCE observed with the TiO2 nanotube architecture is attributed to the increased efficiency of charge separation and transport of electrons.Keywords
This publication has 62 references indexed in Scilit:
- Quantum Dot Solar Cells. Electrophoretic Deposition of CdSe−C60 Composite Films and Capture of Photogenerated Electrons with nC60 Cluster ShellJournal of the American Chemical Society, 2008
- Meeting the Clean Energy Demand: Nanostructure Architectures for Solar Energy ConversionThe Journal of Physical Chemistry C, 2007
- Nanocrystalline TiO2 Solar Cells Sensitized with InAs Quantum DotsThe Journal of Physical Chemistry B, 2006
- Mechanisms for Photogeneration and Recombination of Multiexcitons in Semiconductor Nanocrystals: Implications for Lasing and Solar Energy ConversionThe Journal of Physical Chemistry B, 2006
- Quantum Dot Solar Cells. Harvesting Light Energy with CdSe Nanocrystals Molecularly Linked to Mesoscopic TiO2 FilmsJournal of the American Chemical Society, 2006
- High-efficiency carrier multiplication through direct photogeneration of multi-excitons via virtual single-exciton statesNature Physics, 2005
- High Efficiency Carrier Multiplication in PbSe Nanocrystals: Implications for Solar Energy ConversionPhysical Review Letters, 2004
- Quantum dot solar cellsPhysica E: Low-dimensional Systems and Nanostructures, 2002
- Photoelectrochemical reduction of a copper(I) complex to copper metal by hot electrons at p-InPJournal of the American Chemical Society, 1989
- Efficiency of hot-carrier solar energy convertersJournal of Applied Physics, 1982