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Issue 47, 2016
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One-step additive crosslinking of conjugated polyelectrolyte interlayers: improved lifetime and performance of solution-processed OLEDs

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Abstract

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.

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

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Supplementary files

Article information


Submitted
12 Oct 2016
Accepted
08 Nov 2016
First published
08 Nov 2016

J. Mater. Chem. C, 2016,4, 11150-11156
Article type
Paper

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

S. Stolz, M. Petzoldt, N. Kotadiya, T. Rödlmeier, R. Eckstein, J. Freudenberg, U. H. F. Bunz, U. Lemmer, E. Mankel, M. Hamburger and G. Hernandez-Sosa, J. Mater. Chem. C, 2016, 4, 11150
DOI: 10.1039/C6TC04417D

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