Kuş, MahmutÖzel, FarukVaral, Nurhan M.Ersöz, Mustafa2020-03-262020-03-2620131559-8985https://dx.doi.org/10.2528/PIER12103106https://hdl.handle.net/20.500.12395/29623We report synthesis of magnetic Fe3O4 nanoparticles (MNPs) based on two phase method and their application in organic light-emitting devices (OLEDs) as blend with emissive Polyfluorene (PFO) matrix. Two phase method allows to successively synthesizing oleic acid capped MPNs with 5-10 nm particle size. Colloidal MNPs can be easily mixed with emissive polymer solutions to obtain a blend for OLED application. The electroluminescence efficiency increases by doping with MNPs into emissive layer. Different dopant concentrations varied from 0,4% to 2% were monitored. It was observed that the electroluminescence increases up to 1% w/v doping ratio. The luminance of OLEDs increased from 15.000 cd/m(2) to 24.000 cd/m(2) in comparison pristine device with 1% MNP doped device.en10.2528/PIER12103106info:eu-repo/semantics/openAccessArticle134509524N/AWOS:000312383200027N/A