Simulation of OLEDs with a polar electron transport layer

Altazin, Stéphane; Züfle, Simon; Knapp, Evelyne; Kirsch, Christoph; Schmidt, T.D.; Jäger, L.; Noguchi, Y.; Brütting, W.; Ruhstaller, Beat

doi:10.1016/j.orgel.2016.10.014

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Simulation of OLEDs with a polar electron transport layer
Authors:	Altazin, Stéphane Züfle, Simon Knapp, Evelyne Kirsch, Christoph Schmidt, T.D. Jäger, L. Noguchi, Y. Brütting, W. Ruhstaller, Beat
DOI:	10.1016/j.orgel.2016.10.014
Published in:	Organic Electronics
Volume(Issue):	39
Page(s):	244
Pages to:	249
Issue Date:	Dec-2016
Publisher / Ed. Institution:	Elsevier
ISSN:	1566-1199
Language:	English
Subject (DDC):	621.3: Electrical, communications, control engineering
Abstract:	Organic light-emitting diodes (OLEDs) rely on the use of functional materials with suitable energy levels and mobilities for selective charge carrier injection and transport of one species only at the respective electrode. Until recently, however, the dipolar nature of many organic semiconductors has been largely ignored in this context. In particular, electron transports layers (ETLs) often exhibit spontaneous orientation polarization leading to interfacial charges that modify the electrical potential landscape inside a hetero-layer device. Here we demonstrate that the effect of polar ETLs can be simulated using the well-established Poisson and drift-diffusion formalism, if these interfacial charges are taken into account. Impedance spectroscopy is used in order to validate our approach and to characterize the polarity of the material. Finally, simulations allow to quantify the impact of polar ETLs on device performance.
URI:	https://digitalcollection.zhaw.ch/handle/11475/2768
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Computational Physics (ICP)
Appears in collections:	Publikationen School of Engineering

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Altazin, S., Züfle, S., Knapp, E., Kirsch, C., Schmidt, T. D., Jäger, L., Noguchi, Y., Brütting, W., & Ruhstaller, B. (2016). Simulation of OLEDs with a polar electron transport layer. Organic Electronics, 39, 244–249. https://doi.org/10.1016/j.orgel.2016.10.014

Altazin, S. et al. (2016) ‘Simulation of OLEDs with a polar electron transport layer’, Organic Electronics, 39, pp. 244–249. Available at: https://doi.org/10.1016/j.orgel.2016.10.014.

S. Altazin et al., “Simulation of OLEDs with a polar electron transport layer,” Organic Electronics, vol. 39, pp. 244–249, Dec. 2016, doi: 10.1016/j.orgel.2016.10.014.

ALTAZIN, Stéphane, Simon ZÜFLE, Evelyne KNAPP, Christoph KIRSCH, T.D. SCHMIDT, L. JÄGER, Y. NOGUCHI, W. BRÜTTING und Beat RUHSTALLER, 2016. Simulation of OLEDs with a polar electron transport layer. Organic Electronics. Dezember 2016. Bd. 39, S. 244–249. DOI 10.1016/j.orgel.2016.10.014

Altazin, Stéphane, Simon Züfle, Evelyne Knapp, Christoph Kirsch, T.D. Schmidt, L. Jäger, Y. Noguchi, W. Brütting, and Beat Ruhstaller. 2016. “Simulation of OLEDs with a Polar Electron Transport Layer.” Organic Electronics 39 (December): 244–49. https://doi.org/10.1016/j.orgel.2016.10.014.

Altazin, Stéphane, et al. “Simulation of OLEDs with a Polar Electron Transport Layer.” Organic Electronics, vol. 39, Dec. 2016, pp. 244–49, https://doi.org/10.1016/j.orgel.2016.10.014.