Tuning the Microcavity of Organic Light Emitting Diodes by Solution Processable Polymer–Nanoparticle Composite Layers
| Autor: | Guillaume Gomard, Jan B. Preinfalk, Uli Lemmer, Thomas Lampe, Amos Egel, Tobias D. Schmidt, Wolfgang Brütting, Fabian Schackmar |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Conductive polymer
Materials science business.industry Composite number Physics::Optics Nanoparticle 02 engineering and technology Substrate (electronics) 021001 nanoscience & nanotechnology 01 natural sciences 010309 optics Optics Stack (abstract data type) 0103 physical sciences OLED Optoelectronics General Materials Science 0210 nano-technology Luminous efficacy business Layer (electronics) |
| Popis: | In this study, we present a simple method to tune and take advantage of microcavity effects for an increased fraction of outcoupled light in solution-processed organic light emitting diodes. This is achieved by incorporating nonscattering polymer-nanoparticle composite layers. These tunable layers allow the optimization of the device architecture even for high film thicknesses on a single substrate by gradually altering the film thickness using a horizontal dipping technique. Moreover, it is shown that the optoelectronic device parameters are in good agreement with transfer matrix simulations of the corresponding layer stack, which offers the possibility to numerically design devices based on such composite layers. Lastly, it could be shown that the introduction of nanoparticles leads to an improved charge injection, which combined with an optimized microcavity resulted in a maximum luminous efficacy increase of 85% compared to a nanoparticle-free reference device. |
| Databáze: | OpenAIRE |
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