Polarized electroluminescence from photocrosslinkable nematic fluorene bisacrylates

Markus Jandke; D. Hanft; Peter Strohriegl; Katharine S. Whitehead; Martin Grell; Donal D. C. Bradley

doi:10.1117/12.416913

2 February 2001 Polarized electroluminescence from photocrosslinkable nematic fluorene bisacrylates

Markus Jandke, D. Hanft, Peter Strohriegl, Katharine S. Whitehead, Martin Grell, Donal D. C. Bradley

Proceedings Volume 4105, Organic Light-Emitting Materials and Devices IV; (2001) https://doi.org/10.1117/12.416913
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

In this paper the monodomain-alignment of new photocrosslinkable fluorene bisacrylate model compounds and oligomers is reported. The orientation of the nematic LC- phase is preserved by photopolymerization in an oriented LC- network. Monodomain orientations of crosslinked fluorene bisacrylates are investigated by UV-VIS and photoluminescence spectroscopy comparing different alignment layers. OLEDs were fabricated using oriented fluorene bisacrylates and polyfluorenes leading to state-of-the-art polarization ratios for electroluminescence of up to 25 and brightnesses of about 250 Cd/m².

Citation Download Citation

Markus Jandke, D. Hanft, Peter Strohriegl, Katharine S. Whitehead, Martin Grell, and Donal D. C. Bradley "Polarized electroluminescence from photocrosslinkable nematic fluorene bisacrylates", Proc. SPIE 4105, Organic Light-Emitting Materials and Devices IV, (2 February 2001); https://doi.org/10.1117/12.416913

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