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Surface-Modified Titania Nanoparticles with Conjugated Polymer for Hybrid Photovoltaic Devices

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A novel route is presented for preparation of poly(1-methoxy-4-(2-ethylhexyloxy)-p-phenylenevinylene) (MEH-PPV)-functionalized TiO2 nanoparticles (NPs), resulting in a hybrid nanocomposite (MEH-PPV~TiO2 NPs). Thermogravimetric analysis (TGA) was used to evaluate the exact content of TiO2 nanoparticles in the MEH-PPV~TiO2 nanocomposites. Fourier-transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), and photophysical properties showed that the conjugated polymer chains intimately contact with the inorganic semiconductors. The performance of photovoltaic devices based on the MEH-PPV~TiO2 NPs nanocomposite was investigated by current–voltage (J–V) characteristics and intensity-modulated photovoltage spectroscopy (IMVS). Device performance was greatly improved by direct application of MEH-PPV~TiO2 NPs nanocomposites as the active layer as compared with devices with simply blended counterparts (MEH-PPV/TiO2 NPs). In addition, IMVS revealed that the longer electron lifetime was accompanied by higher open-circuit voltage in the MEH-PPV~TiO2 NPs devices.

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Authors and Affiliations

  1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031, People’s Republic of China

    Hongwei Geng, Ruixiang Peng, Shikui Han, Xiaohong Gu & Mingtai Wang

  2. Key Laboratory of Novel Thin Film Solar Cells, Chinese Academy of Sciences, Hefei, 230031, People’s Republic of China

    Hongwei Geng, Ruixiang Peng, Shikui Han, Xiaohong Gu & Mingtai Wang

  3. School of Materials Science and Chemical Engineering, Anhui University of Architecture, Hefei, 230022, People’s Republic of China

    Mingtai Wang

Authors
  1. Hongwei Geng
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  2. Ruixiang Peng
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  3. Shikui Han
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  4. Xiaohong Gu
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  5. Mingtai Wang
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Correspondence to Mingtai Wang.

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Geng, H., Peng, R., Han, S. et al. Surface-Modified Titania Nanoparticles with Conjugated Polymer for Hybrid Photovoltaic Devices. J. Electron. Mater. 39, 2346–2351 (2010). https://doi.org/10.1007/s11664-010-1137-0

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  • DOI: https://doi.org/10.1007/s11664-010-1137-0

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