Effect of localized current distributions in periodically nanostructured OLEDs on the resonant light outcoupling

Hannes Lüder; Janek Buhl; Martina Gerken

doi:10.1117/12.2606225

4 March 2022 Effect of localized current distributions in periodically nanostructured OLEDs on the resonant light outcoupling

Hannes Lüder, Janek Buhl, Martina Gerken

Author Affiliations +

Proceedings Volume 11995, Physics and Simulation of Optoelectronic Devices XXX; 119950A (2022) https://doi.org/10.1117/12.2606225
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

We present an electrical and optical model for simulating the current distribution in and the resonant light emission from nanostructured organic light-emitting diodes (OLEDs). A periodic nanostructure in an OLED can be used as a resonant waveguide grating to tailor the light emission, i.e., to direct the dominant emission wavelength into a specific direction. We show that the current injection at nanostructured electrodes is strongly enhanced at their corners, leading to localized current paths and emission zones. These current paths have to be overlapping with the resonant optical field hot spots in order to gain maximal resonant light outcoupling. We show that this is not generally the case for periodically nanostructured OLEDs and that the introduction of local isolation layers can improve the overlap by altering the current paths. Depending on the isolation layer configuration either the resonant or non-resonant light outcoupling is pronounced. This optimization potential may be beneficial for compact organic optoelectronic sensors that require highly directional OLED emission.

Conference Presentation

Citation Download Citation

Hannes Lüder, Janek Buhl, and Martina Gerken "Effect of localized current distributions in periodically nanostructured OLEDs on the resonant light outcoupling", Proc. SPIE 11995, Physics and Simulation of Optoelectronic Devices XXX, 119950A (4 March 2022); https://doi.org/10.1117/12.2606225

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