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Advanced Materials

Photoconductivity of a Single Small-Molecule Organic Nanowire

Authors

  • Xiujuan Zhang,

    1. Center of Super-Diamond and Advanced Films (COSDAF) Department of Physics and Materials Science City University of Hong Kong Hong Kong SAR (P.R. China)
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  • Jiansheng Jie,

    1. Center of Super-Diamond and Advanced Films (COSDAF) Department of Physics and Materials Science City University of Hong Kong Hong Kong SAR (P.R. China)
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  • Wenfeng Zhang,

    1. Center of Super-Diamond and Advanced Films (COSDAF) Department of Physics and Materials Science City University of Hong Kong Hong Kong SAR (P.R. China)
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  • Chengyi Zhang,

    1. Laboratory of Organic Optoelectronic Functional Materials and Molecular Engineering Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100101 (P.R. China)
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  • Linbao Luo,

    1. Center of Super-Diamond and Advanced Films (COSDAF) Department of Physics and Materials Science City University of Hong Kong Hong Kong SAR (P.R. China)
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  • Zhubin He,

    1. Center of Super-Diamond and Advanced Films (COSDAF) Department of Physics and Materials Science City University of Hong Kong Hong Kong SAR (P.R. China)
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  • Xiaohong Zhang,

    Corresponding author
    1. Laboratory of Organic Optoelectronic Functional Materials and Molecular Engineering Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100101 (P.R. China)
    • Laboratory of Organic Optoelectronic Functional Materials and Molecular Engineering Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100101 (P.R. China).
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  • Wenjun Zhang,

    1. Center of Super-Diamond and Advanced Films (COSDAF) Department of Physics and Materials Science City University of Hong Kong Hong Kong SAR (P.R. China)
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  • Chunsing Lee,

    1. Center of Super-Diamond and Advanced Films (COSDAF) Department of Physics and Materials Science City University of Hong Kong Hong Kong SAR (P.R. China)
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  • Shuittong Lee

    Corresponding author
    1. Center of Super-Diamond and Advanced Films (COSDAF) Department of Physics and Materials Science City University of Hong Kong Hong Kong SAR (P.R. China)
    • Center of Super-Diamond and Advanced Films (COSDAF) Department of Physics and Materials Science City University of Hong Kong Hong Kong SAR (P.R. China).
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  • S.T.L. thanks the support of the Strategic Research Project(No: 7002075) from the City University of Hong Kong. This work was also supported by the National Basic Research Program of China (973 Program; grant no. 2006CB933000, 2007CB936000) and the National High-Tech R&D Program of China (863 Program; grant no. 2007AA03Z300). Supporting Information is available online from Wiley InterScience or from the authors.

Abstract

The photoconductivity of a methyl squarylium (MeSq) single-nanowire device shows a high light sensitivity, wavelength-dependent photoresponse, good response speed, and excellent stability and reproducibility. Nanodevices fabricated on flexible substrates (see figure) exhibit good mechanical bendability and no obvious change in performance after bending to a curvature of 0.5 cm−1.

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