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One-step additive crosslinking of conjugated polyelectrolyte interlayers: improved lifetime and performance of solution-processed OLEDs

We crosslink an amino-functionalized polyfluorene by the solvent additive 1,8-diiodooctane (DIO). DIO remains in the film after drying of the main solvent and chemically binds to the amino-side groups after a low temperature annealing step, rendering the polyfluorene film insoluble in non-polar solv...

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Main Authors: Stolz, Sebastian (Author) , Petzoldt, Martin (Author) , Freudenberg, Jan (Author) , Bunz, Uwe H. F. (Author) , Lemmer, Uli (Author) , Hamburger, Manuel (Author)
Format: Article (Journal)
Language:English
Published: 08 Nov 2016
In: Journal of materials chemistry. C, Materials for optical and electronic devices
Year: 2016, Volume: 4, Issue: 47, Pages: 11150-11156
ISSN:2050-7534
DOI:10.1039/C6TC04417D
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1039/C6TC04417D
Verlag, lizenzpflichtig, Volltext: https://pubs.rsc.org/en/content/articlelanding/2016/tc/c6tc04417d
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Author Notes:Sebastian Stolz, Martin Petzoldt, Naresh Kotadiya, Tobias Rödlmeier, Ralph Eckstein, Jan Freudenberg, Uwe H.F. Bunz, Uli Lemmer, Eric Mankel, Manuel Hamburger and Gerardo Hernandez-Sosa
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Summary:We crosslink an amino-functionalized polyfluorene by the solvent additive 1,8-diiodooctane (DIO). DIO remains in the film after drying of the main solvent and chemically binds to the amino-side groups after a low temperature annealing step, rendering the polyfluorene film insoluble in non-polar solvents. We correlate the amount of DIO, the reduction of operational voltage and increase in lifetime of solution-processed OLEDs. We demonstrate a fully solution-processed device using the crosslinked polyfluorene electron injection layer and an inkjet-printed Ag top electrode.
Item Description:Gesehen am 15.05.2020
Physical Description:Online Resource
ISSN:2050-7534
DOI:10.1039/C6TC04417D

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