Microwave-assisted synthesis of FexZn1−xO nanoparticles for use in MEH-PPV nanocomposites and their application in polymer light-emitting diodes

  • Thaiskang Jamatia
  • David SkodaEmail author
  • Pavel Urbanek
  • Jakub Sevcik
  • Jan Maslik
  • Lukas Munster
  • Lukas Kalina
  • Ivo Kuritka


A one-step microwave-assisted polyol method was used to fabricate FexZn1−xO (x = 0.01, 0.05, 0.10) nanoparticles. Zinc acetate dihydrate, iron (III) acetylacetonate, oleic acid and diethylene glycol were placed in a Teflon-lined reaction vessel. The reaction mixture was heated up to 250 °C for 15 min in a microwave reactor. The surface modification with oleic acid prevented agglomeration of the nanoparticles. The X-ray diffraction analysis revealed characteristics wurtzite hexagonal structure of ZnO and successful incorporation of the Fe dopant into the host crystal lattice. Doping of ZnO by Fe led to bandgap modification as estimated by Tauc plot. The as-prepared nanopowders were dispersed in toluene and mixed with a poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) polymer to make stable homogenous dispersions. Then, the FexZn1−xO/MEH-PPV nanocomposite thin films were prepared by spin coating and used as thin active layers in polymer light-emitting diodes. The thickness of deposited FexZn1−xO/MEH-PPV film was ca. 30 nm and that of reference neat MEH-PPV film was ca. 25 nm. The electroluminescent spectroscopy study showed that direct blending of MEH-PPV with Fe-doped ZnO nanoparticles is a simple and effective approach to significantly increase the luminance intensity of the diode in comparison to the diode fabricated by neat MEH-PPV.



This work was supported by the Ministry of Education, Youth and Sports of the Czech Republic - Program NPU I (LO1504) and Internal Grant Agency of Tomas Bata University in Zlin (Grant Numbers: IGA/CPS/2017/008, IGA/CPS/2018/007 and IGA/CPS/2019/007). This contribution was written with the support of Operational Program Research and Development for Innovations co-funded by the European Regional Development Fund (ERDF) and the national budget of Czech Republic, within the framework of project CPS - strengthening research capacity (Reg. Number: CZ.1.05/2.1.00/19.0409).

Supplementary material

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Supplementary material 1 (DOCX 6785 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Centre of Polymer SystemsTomas Bata University in ZlinZlinCzech Republic
  2. 2.Materials Research CentreBrno University of TechnologyBrnoCzech Republic

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