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Tuning of MEH-PPV electro-optical properties by incorporation of benzylidene-malononitrile-based small organic molecules

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Abstract

In this work, we report the composite formation of p-N,N-dimethyl-amino-benzylidene-malononitrile (DABMN) and poly [2-methoxy-5-(2-ethylhexyloxy)-1, 4-phenylenevinylene] (MEH-PPV). The microstructure and the electro-optical performance of the composite film were investigated and reveal interaction between DABMN and MEH-PPV. The photoluminescence spectra of the composite showed quenching, while the current-voltage characteristic exhibits a Schottky diode-type behavior with a low threshold voltage. From conductance measurements, the interface state density of the MEH-PPV and MEH-PPV:DABMN was determined as 2.02 × 1014 eV−1 m−2 and 1.27 × 1014 eV−1 m−2, respectively.

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Authors and Affiliations

  1. BCMaterials, Basque Center for Materials, Applications and Nanostructures, Bld. Martina Casiano, UPV/EHU Science Park, Barrio Sarriena s/n, 48940, Leioa, Spain

    Hassen Dhifaoui, Meenakshi Pegu, Samrana Kazim & Shahzada Ahmad

  2. Equipe Dispositifs Electroniques Organiques et Photovoltaïque Moléculaire, Laboratoire de la Matière Condensée et des Nanosciences, Faculté des Sciences de Monastir, Université de Monastir, Avenue de l’Environnement, 5019, Monastir, Tunisia

    Hassen Dhifaoui, Walid Aloui & Abdelaziz Bouazizi

  3. IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain

    Samrana Kazim & Shahzada Ahmad

Authors
  1. Hassen Dhifaoui
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  2. Meenakshi Pegu
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  3. Walid Aloui
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  4. Abdelaziz Bouazizi
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  5. Samrana Kazim
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  6. Shahzada Ahmad
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Correspondence to Walid Aloui or Shahzada Ahmad.

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Dhifaoui, H., Pegu, M., Aloui, W. et al. Tuning of MEH-PPV electro-optical properties by incorporation of benzylidene-malononitrile-based small organic molecules. emergent mater. 3, 687–692 (2020). https://doi.org/10.1007/s42247-020-00113-1

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  • DOI: https://doi.org/10.1007/s42247-020-00113-1

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