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Energy resolved-electrochemical impedance spectroscopy investigation of the role of Al-doped ZnO nanoparticles in electronic structure modification of polymer nanocomposite LEDs

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dc.title Energy resolved-electrochemical impedance spectroscopy investigation of the role of Al-doped ZnO nanoparticles in electronic structure modification of polymer nanocomposite LEDs en
dc.contributor.author Ševčík, Jakub
dc.contributor.author Urbánek, Pavel
dc.contributor.author Škoda, David
dc.contributor.author Jamatia, Thaiskang
dc.contributor.author Nádaždy, Vojtech
dc.contributor.author Urbánek, Michal
dc.contributor.author Antoš, Jan
dc.contributor.author Münster, Lukáš
dc.contributor.author Kuřitka, Ivo
dc.relation.ispartof Materials and Design
dc.identifier.issn 0264-1275 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2021
utb.relation.volume 205
dc.type article
dc.language.iso en
dc.publisher Elsevier Ltd
dc.identifier.doi 10.1016/j.matdes.2021.109738
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0264127521002914
dc.subject doped nanoparticles en
dc.subject PLED en
dc.subject thin composite film en
dc.description.abstract The work is focused on power efficiency and luminance of polymer light-emitting diodes (PLED) based on polymer matrix and nanoparticulate filler. As polymer matrices poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and poly[(9,9-di-n-octylfluorenyl-2,7-diyl)-alt-(benzo[2,1,3]thiadiazol-4,8-diyl)] (F8BT) were used. Nanofillers, aluminium-doped ZnO nanoparticles, were prepared by microwave-assisted polyol method and characterized by XRD, SEM, and TEM. Obtained nanoparticle colloids were mixed with dissolved polymer. Then, nanocomposite active layers of prepared PLEDs were spin-cast in one processing step. Specific optoelectronic and electric properties of nanocomposite materials and performance of PLED devices were investigated using UV–Vis absorption, photoluminescence, energy-resolved electrochemical impedance spectroscopy (ER-EIS), and I-V and luminance measurements. The addition of Al-doped ZnO nanoparticles improved power efficiency of diodes exhibiting an order of magnitude enhancement in electroluminescence intensity, luminance (from 1 900 to 20 700 cd/m2 for MEH-PPV and from 4 600 to 38 000 cd/m2 for F8BT) and had pronounced effect on opening bias voltage of final devices. In addition, two effects of nanoparticulate doping were revealed. The first, specific one, related with electronic structure of used nanoparticles. The second, non-specific, which indirectly contributes to structural ordering of the polymer matrix. Observed phenomena are related to electronic band structure affected by the addition of nanoparticles as revealed by ER-EIS. © 2021 The Author(s) en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1010334
utb.identifier.scopus 2-s2.0-85105692613
utb.source j-scopus
dc.date.accessioned 2021-05-25T11:04:51Z
dc.date.available 2021-05-25T11:04:51Z
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Ševčík, Jakub
utb.contributor.internalauthor Urbánek, Pavel
utb.contributor.internalauthor Škoda, David
utb.contributor.internalauthor Jamatia, Thaiskang
utb.contributor.internalauthor Urbánek, Michal
utb.contributor.internalauthor Antoš, Jan
utb.contributor.internalauthor Münster, Lukáš
utb.contributor.internalauthor Kuřitka, Ivo
utb.fulltext.sponsorship This work was funded by the Ministry of Education, Youth and Sports of the Czech Republic—Program NPU I (LO1504). Further, this work was supported by the Ministry of Education, Youth and Sports of the Czech Republic – DKRVO (RP/CPS/2020/006). The authors T.J. and I.K. specifically acknowledge funding by the Internal Grant Agency of Tomas Bata University in Zlín, grant no. IGA/CPS/2019/007 and no. IGA/CPS/2020/003. This article was also written with the support of Operational Program Research and Development for Innovations co-funded by the European Regional Development Fund 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). This work was performed during the implementation of the project Building-up Centre for advanced materials application of the Slovak Academy of Sciences, ITMS project code 313021T081 supported by the Research & Innovation Operational Programme funded by the ERDF.
utb.scopus.affiliation Tomas Bata University in Zlin, Centre of Polymer Systems, Tr. Tomase Bati 5678, Zlin, CZ-760 01, Czech Republic; Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava, SK-845 11, Slovakia; Centre for Advanced Material Application, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava, SK-845 11, Slovakia
utb.fulltext.projects LO1504
utb.fulltext.projects RP/CPS/2020/006
utb.fulltext.projects IGA/CPS/2019/007
utb.fulltext.projects IGA/CPS/2020/003
utb.fulltext.projects CZ.1.05/2.1.00/19.0409
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