19 May 2000 Liquid crystalline orientation of polyfluorenes for polarized electroluminescence devices
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Proceedings Volume 3939, Organic Photonic Materials and Devices II; (2000) https://doi.org/10.1117/12.386372
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States
Abstract
Liquid crystalline conjugated polymers have potential applications as inexpensive, easy to process polarized back lights for liquid crystal displays. Two 'Hairy rod' type conjugated polymers have been investigated as polarized light emitting materials. In this paper, we present polarized absorption and photoluminescence for films aligned on rubbed precursor PPV alignment layers. We also report electroluminescence measurements for oriented multi-layer devices with rubbed PPV hole transporting alignment layers that produced polarization ratios of up to 25:1 and a luminance of 250 cd/m2. Sample preparation, device fabrication and characterization are described. Preliminary investigations have been made into the performance of PPV as an alignment layer with respect to thermal degradation.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Katharine S. Whitehead, Katharine S. Whitehead, Martin Grell, Martin Grell, Donal D. C. Bradley, Donal D. C. Bradley, Markus Jandke, Markus Jandke, Peter Strohriegl, Peter Strohriegl, } "Liquid crystalline orientation of polyfluorenes for polarized electroluminescence devices", Proc. SPIE 3939, Organic Photonic Materials and Devices II, (19 May 2000); doi: 10.1117/12.386372; https://doi.org/10.1117/12.386372
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