Year

2018

Type(s)

Journal Article

Author(s)

Chulkin, P. and Vybornyi, O. and Lapkowski, M. and Skabara, P.J. and Data, P.

Source

Journal of Materials Chemistry C, 6(5): 1008—1014, 2018

Url

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85041490487&doi=10.1039%2fc7tc04599a&partnerID=40&md5=c7af863dafec2fe122c2a87fafb99d54

BibTeX

BibTeX

BibTeX

@ARTICLE{Chulkin20181008, author={Chulkin, P. and Vybornyi, O. and Lapkowski, M. and Skabara, P.J. and Data, P.}, title={Impedance spectroscopy of OLEDs as a tool for estimating mobility and the concentration of charge carriers in transport layers}, journal={Journal of Materials Chemistry C}, year={2018}, volume={6}, number={5}, pages={1008-1014}, doi={10.1039/c7tc04599a}, note={cited By 9}, url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85041490487&doi=10.1039%2fc7tc04599a&partnerID=40&md5=c7af863dafec2fe122c2a87fafb99d54}, affiliation={Silesian University of Technology, Strzody 9, Gliwice, 44-100, Poland; WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, G1 1XL, United Kingdom; School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, United Kingdom; Centre of Polymer and Carbon Materials, Polish Academy of Sciences, ul. M. Curie-Skłodowskiej 34, Zabrze, 41-819, Poland; Durham University, Department of Physics, South Road, Durham, DH1 3LE, United Kingdom}, abstract={The article presents a novel impedance spectroscopy based technique designed to characterise organic light emitting diodes (OLED) during operation. A number of devices based on NPB (N,N′-di(1-naphthyl)-N,N′-diphenyl-(1,1′-biphenyl)-4,4′-diamine) and TPBi (2,2′,2′′-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole)) conducting layers, CBP (4,4′-bis(N-carbazolyl)-1,1′-biphenyl) as a host and BPTZ-DBTO2 (3,6-bis(10H-phenothiazine-10-yl)-9H-fluorene-[dibenzothiophene-S,S-dioxide]) as an emitter were taken as an example to validate the method. Using equivalent electrical circuits, values of capacitance and conductivity of both hole- (HTL) and electron-transport (ETL) layers were determined and analysed separately. Those parameters, as well as current-voltage characteristics, were used to calculate (i) mobility (μ, cm2 V-1 s-1) of both types of charge carriers, (ii) charge density (n, cm-3) of the charge carriers, and (iii) electric field intensity (E, V m-1) in both transport layers as functions of the applied voltage. © 2018 The Royal Society of Chemistry.}, keywords={Aromatic hydrocarbons; Capacitance; Charge carriers; Current voltage characteristics; Electric fields; Electric network analysis; Electron transport properties; Spectroscopy, Applied voltages; Conducting layers; Dibenzothiophenes; Electric field intensities; Electron transport; Equivalent electrical circuits; Impedance spectroscopy; Transport layers, Organic light emitting diodes (OLED)}, funding_details={H2020 Marie Skłodowska-Curie ActionsH2020 Marie Skłodowska-Curie Actions, MSCA}, funding_text 1={The authors gratefully acknowledge the financial support of project Excilight: Donor–Acceptor Light Emitting Exciplexes as Materials for Easy-to-tailor Ultra-efficient OLED Lightning (H2020-MSCA-ITN-2015/674990) financed by Marie Sklodowska-Curie Actions within the framework programme for research and innovations Horizon2020.}, references={Klauk, H., (2006) Organic Electronics: Materials, Manufacturing and Applications, , John Wiley & Sons, New York; Special Issue Organic Electronics (2015) ChemPhysChem, 16, p. 1097; Adachi, C., Baldo, M.A., Thompson, M.E., Forrest, S.R., (2001) J. Appl. Phys., 90, p. 5048; Ostroverkova, O., (2016) Chem. Rev., 116, p. 13279; Data, P., Swist, A., Lapkowski, M., Soloducho, J., Darowicki, K., Monkman, A.P., (2015) Electrochim. Acta, 184, p. 86; Han, T.-E., Song, W., Lee, T.-W., (2015) ACS Appl. Mater. Interfaces, 7, p. 3117; So, F., Kondakov, D., (2010) Adv. Mater., 22, p. 3762; Figueira-Duarte, T.M., Mullen, K., (2011) Chem. Rev., 111, p. 7260; Kondakov, D.Y., (2007) J. Appl. Phys., 102, p. 114504; Jankus, V., Data, P., Graves, D., McGuinness, C., Santos, J., Bryce, M.R., Dias, F.B., Monkman, A.P., (2014) Adv. Funct. Mater., 24, p. 6178; Data, P., Motyka, R., Lapkowski, M., Suwinski, J., Jursenas, S., Kreiza, G., Miasojedovas, A., Monkman, A.P., (2015) Electrochim. Acta, 182, p. 524; Pereira, D., Santos, P., Ward, J., Data, P., Okazaki, M., Takeda, Y., Minakata, S., Monkman, A., (2017) Sci. Rep., 7, p. 6234; Cheung, C.H., Kwok, K.C., Tse, S.C., So, S.K., (2008) J. Appl. 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Electron., 1, p. 41; Nowy, S., (2010) Doctoral Degree Thesis, , Augsburg; Ragoisha, G., Aniskevich, Y., https://arxiv.org/abs/1604.08154, False Capacitance of supercapacitors, accessed: May, 2017; Ragoisha, G.A., Bondarenko, A.S., (2016) EIS Spectrum Analyzer, , http://www.abc.chemistry.bsu.by/vi/analyser, accessed: May}, correspondence_address1={Data, P.; Silesian University of Technology, Strzody 9, Poland; email: przemyslaw.data@dur.ac.uk}, publisher={Royal Society of Chemistry}, issn={20507534}, coden={JMCCC}, language={English}, abbrev_source_title={J. Mater. Chem. C}, document_type={Article}, source={Scopus},