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Photorefractivity in a bi-functional polymer nanocomposites sensitized by CdS nanoparticle

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Abstract

We report an organic/inorganic hybridized nanocomposite consisting of a bi-functional poly(N-vinyl)-3-[p-nitrophenylazo]carbazolyl serves as a polymeric charge-transporting and second-order nonliner optical matrix, and CdS nanoparticles as photosensitizers to manifest photorefractive (PR) effect. The unpoled PVNPAK film exhibits a second harmonic generation (SHG) coefficient of 4.7 pm/V due to the possibility of self-alignment of the azo chromophore. Significant enhancement of photoconductivity is noticed with the increase of CdS nanoparticles concentration. The photorefractive property of the polymer nanocomposites were determined by two-beam coupling (TBC) experiment. The TBC gain and diffraction efficiency of 11.89 cm−1 and 3.2% were obtained for PVNPAK/CdS at zero electrical field.

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Authors and Affiliations

  1. Key Laboratory of Fiber Optic Sensing Technology and Information Processing, Ministry of Education, Wuhan University of Technology, Wuhan, 430070, China

    Liyun Ding  (丁莉芸), Lanfen Huang & Yunming Zhong

Authors
  1. Liyun Ding  (丁莉芸)
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  2. Lanfen Huang
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  3. Yunming Zhong
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Correspondence to Liyun Ding  (丁莉芸).

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Funded by the National Natural Science Foundation of China (No. 50802069) and the Natural Science Foundation of Wuhan University of Technology (471-38650378)

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Ding, L., Huang, L. & Zhong, Y. Photorefractivity in a bi-functional polymer nanocomposites sensitized by CdS nanoparticle. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 25, 550–554 (2010). https://doi.org/10.1007/s11595-010-0041-z

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  • DOI: https://doi.org/10.1007/s11595-010-0041-z

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