Light-Induced Charge Transfer in Pyrene/CdSe-SWNT Hybrids

Authors

  • L. Hu,

    1. Department of Physics and Astronomy, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, California 90095-1547 (USA)
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    • These authors contributed equally to this work

  • Y.-L. Zhao,

    1. California NanoSystems Institute and Department of Chemistry and Biochemistry, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, California 90095-1569 (USA)
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    • These authors contributed equally to this work

  • K. Ryu,

    1. Department of Electrical Engineering, University of Southern California, University Park Campus, Los Angeles, California 90089 (USA)
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  • C. Zhou,

    1. Department of Electrical Engineering, University of Southern California, University Park Campus, Los Angeles, California 90089 (USA)
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  • J. F. Stoddart,

    1. California NanoSystems Institute and Department of Chemistry and Biochemistry, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, California 90095-1569 (USA)
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  • G. Grüner

    1. Department of Physics and Astronomy, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, California 90095-1547 (USA)
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  • This work was supported by NSF Grant DMR-0404029, the Microelectronics Advanced Research Corporation (MARCO) and its Focus Center Research Program (FCRP) – Center on Functional Engineered Nano Architectonics (FENA), the Defense Advanced Research Projects Agency (DARPA), and the Center for Nanoscale Innovation for Defense (CNID). Supporting Information is available online at Wiley InterScience or from the author.

Abstract

original image

Hybrids of pyrene/CdSe-single-walled carbon nanotubes (SWNTs) are fabricated by self-assembling surface-functionalized pyrene/CdSe nanoparticles onto CVD-grown SWNTs. Light- induced charge transfer from the nanoparticles to the nanotubes is determined from the threshold voltage shift of a SWNT field-effect transistor, yielding a maximum value of 2.2 electrons per pyrene/CdSe nanoparticle.

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