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Proceedings Paper

On the role of polar molecules and the barrier for charge injection in OLEDs
Author(s): S. Altazin; S. Züfle; E. Knapp; C. Kirsch; T. D. Schmidt; L. Jäger; W. Brütting; B. Ruhstaller
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Paper Abstract

Many electron transport layer materials (ETL) employed in state of the art organic light emitting diodes (OLEDs) are known to be polar. We combine for the first time simulations and electrical characterization of OLEDs based on polar ETL, in order to understand the impact of such materials on the device operation. Depending on the orientation of the dipole orientation, simulations predict either a benefit or a disadvantage of the polar ETL for the device performance. We also show that OLEDs featuring a polar material are perfectly suited for extracting mobility activation energy and Injection barrier from the anode to the ETL.

Paper Details

Date Published: 23 September 2016
PDF: 9 pages
Proc. SPIE 9941, Organic Light Emitting Materials and Devices XX, 99410O (23 September 2016); doi: 10.1117/12.2238620
Show Author Affiliations
S. Altazin, FLUXiM AG (Switzerland)
S. Züfle, FLUXiM AG (Switzerland)
Zürcher Hochschule für Angewandte Wissenschaften (Switzerland)
E. Knapp, Zürcher Hochschule für Angewandte Wissenschaften (Switzerland)
C. Kirsch, Zürcher Hochschule für Angewandte Wissenschaften (Switzerland)
T. D. Schmidt, Univ. Augsburg (Germany)
L. Jäger, Univ. Augsburg (Germany)
W. Brütting, Univ. Augsburg (Germany)
B. Ruhstaller, FLUXiM AG (Switzerland)
Zürcher Hochschule für Angewandte Wissenschaften (Switzerland)


Published in SPIE Proceedings Vol. 9941:
Organic Light Emitting Materials and Devices XX
Franky So; Chihaya Adachi; Jang-Joo Kim, Editor(s)

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