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Photoresponse in large area multiwalled carbon nanotube/polymer nanocomposite films

机译：大面积多壁碳纳米管/聚合物纳米复合薄膜中的光响应

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摘要

We present a near IR photoresponse study of large area multiwalled carbon nanotube/poly(3-hexylthiophene)-block-polystyrene polymer (MWNT/P3HT-b-PS) nanocomposite films for different loading ratio of MWNT into the polymer matrix. We show that the photocurrent strongly depends on the position of the laser spot with maximum photocurrent occurring at the metal-film interface. In addition, compared to the pure MWNT film, the photoresponse is much larger in the MWNT/polymer composite films. The time constant for the photoresponse is slow and varies between 0.6 and 1.2 s. We explain the photoresponse by Schottky barrier modulation at the metal-film interface.
机译：我们提出了一个大面积的多壁碳纳米管/聚（3-己基噻吩）-嵌段-聚苯乙烯聚合物（MWNT / P3HT-b-PS）纳米复合膜的近红外光响应研究，用于不同的MWNT负载比进入聚合物基质。我们表明，光电流在很大程度上取决于激光光斑的位置，并且最大光电流发生在金属膜界面处。另外，与纯MWNT膜相比，在MWNT /聚合物复合膜中光响应大得多。光响应的时间常数很慢，并且在0.6到1.2 s之间变化。我们解释了肖特基势垒调制在金属膜界面的光响应。

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  • 来源
    《Applied Physicsletters》 |2009年第3期|042110.1-042110.3|共3页
  • 作者

    Paul Stokes; Liwei Liu; Jianhua Zou; Lei Zhai; Qun Huo; Saiful I. Khondaker;

  • 作者单位

    Nanoscience Technology Center, University of Central Florida, Orlando, Florida 32826, USA Department of Physics, University of Central Florida, Orlando, Florida 32826, USA;

    Nanoscience Technology Center, University of Central Florida, Orlando, Florida 32826, USA Department of Physics, University of Central Florida, Orlando, Florida 32826, USA;

    Nanoscience Technology Center, University of Central Florida, Orlando, Florida 32826, USA Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, Florida 32826, USA Department of Chemistry, University of Central Florida, Orlando, Florida 32826, USA;

    Nanoscience Technology Center, University of Central Florida, Orlando, Florida 32826, USA Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, Florida 32826, USA Department of Chemistry, University of Central Florida, Orlando, Florida 32826, USA;

    Nanoscience Technology Center, University of Central Florida, Orlando, Florida 32826, USA Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, Florida 32826, USA Department of Chemistry, University of Central Florida, Orlando, Florida 32826, USA;

    Nanoscience Technology Center, University of Central Florida, Orlando, Florida 32826, USA Department of Physics, University of Central Florida, Orlando, Florida 32826, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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