Reversible Modulation of Conductance in Silicon Devices via UV/Visible-Light Irradiation

Authors

  • Tao He,

    1. Departments of Chemistry, Computer Science, Mechanical Engineering and Materials Science, and Smalley Institute for Nanoscale Science and Technology Rice University, Houston, Texas 77005 (USA)
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  • Meng Lu,

    1. Departments of Chemistry, Computer Science, Mechanical Engineering and Materials Science, and Smalley Institute for Nanoscale Science and Technology Rice University, Houston, Texas 77005 (USA)
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  • Jun Yao,

    1. Departments of Chemistry, Computer Science, Mechanical Engineering and Materials Science, and Smalley Institute for Nanoscale Science and Technology Rice University, Houston, Texas 77005 (USA)
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  • Jianli He,

    1. Departments of Chemistry, Computer Science, Mechanical Engineering and Materials Science, and Smalley Institute for Nanoscale Science and Technology Rice University, Houston, Texas 77005 (USA)
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  • Bo Chen,

    1. Departments of Chemistry, Computer Science, Mechanical Engineering and Materials Science, and Smalley Institute for Nanoscale Science and Technology Rice University, Houston, Texas 77005 (USA)
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  • Neil Halen Di Spigna,

    1. Department of Electrical and Computer Engineering North Carolina State University Raleigh, North Carolina 27695 (USA)
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  • David P. Nackashi,

    1. Department of Electrical and Computer Engineering North Carolina State University Raleigh, North Carolina 27695 (USA)
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  • Paul D. Franzon,

    1. Department of Electrical and Computer Engineering North Carolina State University Raleigh, North Carolina 27695 (USA)
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  • James M. Tour

    Corresponding author
    1. Departments of Chemistry, Computer Science, Mechanical Engineering and Materials Science, and Smalley Institute for Nanoscale Science and Technology Rice University, Houston, Texas 77005 (USA)
    • Departments of Chemistry, Computer Science, Mechanical Engineering and Materials Science, and Smalley Institute for Nanoscale Science and Technology Rice University, Houston, Texas 77005 (USA).
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  • This work was supported by DARPA through the Air Force Office of Scientific Research. Supporting Information includes the detailed information on the synthesis of triazene-derivatized spiropyran and its grafting protocol, and is available online from Wiley InterScience or from the author.

Abstract

original image

Silicon devices bearing grafted molecular monolayers have their conductance reversibly modulated. By alternately illuminating the samples with visible and near-UV light, threshold-voltage shifts occur to the negative and positive directions, respectively. This corresponds to charge transfer/redistribution between the silicon device and the grafted molecules.

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