Colloidal cobalt-doped ZnO nanoparticles by microwave-assisted synthesis and their utilization in thin composite layers with MEH-PPV as an electroluminescent material for polymer light emitting diodes

Škoda, David; Urbánek, Pavel; Ševčík, Jakub; Münster, Lukáš; Nádaždy, Vojtech; Cullen, David A.; Bažant, Pavel; Antoš, Jan; Kuřitka, Ivo

dc.title	Colloidal cobalt-doped ZnO nanoparticles by microwave-assisted synthesis and their utilization in thin composite layers with MEH-PPV as an electroluminescent material for polymer light emitting diodes	en
dc.contributor.author	Škoda, David
dc.contributor.author	Urbánek, Pavel
dc.contributor.author	Ševčík, Jakub
dc.contributor.author	Münster, Lukáš
dc.contributor.author	Nádaždy, Vojtech
dc.contributor.author	Cullen, David A.
dc.contributor.author	Bažant, Pavel
dc.contributor.author	Antoš, Jan
dc.contributor.author	Kuřitka, Ivo
dc.relation.ispartof	Organic Electronics: physics, materials, applications
dc.identifier.issn	1566-1199 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued	2018
utb.relation.volume	59
dc.citation.spage	337
dc.citation.epage	348
dc.type	article
dc.language.iso	en
dc.publisher	Elsevier
dc.identifier.doi	10.1016/j.orgel.2018.05.037
dc.relation.uri	https://www.sciencedirect.com/science/article/pii/S1566119918302581
dc.subject	Cobalt-doped zinc oxide	en
dc.subject	Colloidal nanoparticles	en
dc.subject	Microwave synthesis	en
dc.subject	MEH-PPV polymer	en
dc.subject	Optoelectronics	en
dc.subject	Polymer light emitting diodes	en
dc.description.abstract	CoxZn1-xO (x = 0.01, 0.05 and 0.1) nanoparticles were prepared by microwave-assisted polyol method from zinc acetate dihydrate and Co(II) acetylacetonate. The reactions were performed in diethylene glycol (DEG) at 250 °C with the use of oleic acid as a surfactant. Resulting nanoparticle (ca. 10 nm) precipitates were washed with methanol and dried or kept as colloidal solutions redispersed in toluene. Colloidal solutions were mixed with the Poly [2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) polymer to produce thin nanocomposite layers with specific optoelectronic properties. The electronic structure in terms of density of states (DOS) of MEH-PPV and MEH-PPV/nanocomposite layers was investigated by recently proposed energy resolved electrochemical impedance spectroscopy method. The MEH-PPV polymer and its nanocomposites with ZnO or CoxZn1-xO nanoparticles were used as thin active layers in polymer light emitting diodes (PLED). The nanocomposite layers exhibited optoelectronic properties which were found to be beneficial as the active layer in PLEDs, exhibiting an order of magnitude enhancement in electroluminescence intensity. A pronounced effect on the opening bias voltage of final devices with CoxZn1-xO nanoparticles was also observed. © 2018 Elsevier B.V.	en
utb.faculty	University Institute
dc.identifier.uri	http://hdl.handle.net/10563/1007953
utb.identifier.obdid	43878196
utb.identifier.scopus	2-s2.0-85047824252
utb.identifier.wok	000452862400051
utb.identifier.coden	OERLA
utb.source	j-scopus
dc.date.accessioned	2018-07-27T08:47:35Z
dc.date.available	2018-07-27T08:47:35Z
dc.description.sponsorship	CZ.1.05/2.1.00/19.0409; DOE, U.S. Department of Energy; IGA/CPS/2017/008, NPU, Northwestern Polytechnical University; LO1504, NPU, Northwestern Polytechnical University; IGA/CPS/2016/007, NPU, Northwestern Polytechnical University; APVV-14-0891, APVV, Agentúra na Podporu Výskumu a Vývoja; MŠMT, Ministerstvo Školství, Mládeže a Tělovýchovy; DOE, U.S. Department of Energy; Research and Development; ORNL, Oak Ridge National Laboratory
dc.description.sponsorship	Ministry of Education, Youth and Sports of the Czech Republic -Program NPU I [LO1504]; Internal Grant Agency of Tomas Bata University in Zlin [IGA/CPS/2016/007, IGA/CPS/2017/008]; Operational Program Research and Development for Innovations - European Regional Development Fund; national budget of Czech Republic [CZ.1.05/2.1.00/19.0409]; Slovak Research and Development Agency [APVV-14-0891]
utb.ou	Centre of Polymer Systems
utb.contributor.internalauthor	Škoda, David
utb.contributor.internalauthor	Urbánek, Pavel
utb.contributor.internalauthor	Ševčík, Jakub
utb.contributor.internalauthor	Münster, Lukáš
utb.contributor.internalauthor	Bažant, Pavel
utb.contributor.internalauthor	Antoš, Jan
utb.contributor.internalauthor	Kuřitka, Ivo
utb.fulltext.affiliation	David Skoda a,∗ , Pavel Urbanek a , Jakub Sevcik a , Lukas Munster a , Vojtech Nadazdy b , David A. Cullen c , Pavel Bazant a , Jan Antos a , Ivo Kuritka a a Centre of Polymer Systems, Tomas Bata University in Zlin, Tr. Tomase Bati 5678, Zlin, CZ, 760 01, Czech Republic b Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava, SK, 845 11, Slovak Republic c Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA ∗ Corresponding author. E-mail address: dskoda@utb.cz (D. Skoda).
utb.fulltext.dates	Received 15 March 2018 Received in revised form 22 May 2018 Accepted 25 May 2018 Available online 28 May 2018
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utb.fulltext.sponsorship	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/2016/007 and IGA/CPS/2017/008). This contribution was written with support of Operational Program Research and Development for Innovations co-funded by the European Regional Development Fund and national budget of Czech Republic, within the framework of project CPS - strengthening research capacity (reg. number: CZ.1.05/2.1.00/19.0409). The support from the Slovak Research and Development Agency under Project No. APVV-14-0891 is acknowledged as well. Scanning transmission electron microscopy was performed as part of a user project through Oak Ridge National Laboratory's Center for Nanophase Materials Sciences, which is a U.S. Department of Energy (DOE) Office of Science user facility and by instrumentation provided by the DOE Office of Nuclear Energy, Fuel Cycle R&D Program, and the Nuclear Science User Facilities. Authors thank Dr. J. Prokleska for the magnetic properties measurements. Magnetic properties measurements were performed in the Materials Growth and Measurement Laboratory MGML (see: http://mgml.eu).
utb.wos.affiliation	[Skoda, David; Urbanek, Pavel; Sevcik, Jakub; Munster, Lukas; Bazant, Pavel; Antos, Jan; Kuritka, Ivo] Tomas Bata Univ Zlin, Ctr Polymer Syst, Tr Tomase Bati 5678, CZ-76001 Zlin, Czech Republic; [Nadazdy, Vojtech] Slovak Acad Sci, Inst Phys, Dubravska Cesta 9, SK-84511 Bratislava, Slovakia; [Cullen, David A.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37830 USA
utb.scopus.affiliation	Centre of Polymer Systems, Tomas Bata University in Zlin, Tr. Tomase Bati 5678, Zlin, CZ, Czech Republic; Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava, SK, Slovakia; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States
utb.fulltext.projects	LO1504
utb.fulltext.projects	IGA/CPS/2016/007
utb.fulltext.projects	IGA/CPS/2017/008
utb.fulltext.projects	CZ.1.05/2.1.00/19.0409
utb.fulltext.projects	APVV-14-0891