Single-Walled Carbon Nanotube–CdS Nanocomposites as Light-Harvesting Assemblies: Photoinduced Charge-Transfer Interactions


  • The research described herein was supported by the Office of Basic Energy Sciences of the US Department of Energy. The contribution no. is NDRL 4588 from Notre Dame Radiation Laboratory. Supporting Information is available online from Wiley InterScience or from the author.


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Deposition of CdS nanoparticles on SWCNTs produces a photoactive composite that undergoes charge transfer interactions following excitation with visible light (see Figure). The transient bleaching recovery in approximately 200 ps confirms quick deactivation of excited CdS on the SWCNT surface. Visible excitation of the CdS–SWCNT film produces a photocurrent and thus provides evidence for the electron-transfer pathway in the composite.