Glassy nematic conjugated oligomers: materials for organic light-emitting diodes

Andrew C. A. Chen; Sean W. Culligan; Yanhou Geng; Shaw H. Chen; Kevin P. Klubek; Kathleen M. Vaeth; Ching W. Tang

doi:10.1117/12.558412

15 October 2004 Glassy nematic conjugated oligomers: materials for organic light-emitting diodes

Andrew C. A. Chen, Sean W. Culligan, Yanhou Geng, Shaw H. Chen, Kevin P. Klubek, Kathleen M. Vaeth, Ching W. Tang

Proceedings Volume 5518, Liquid Crystals VIII; (2004) https://doi.org/10.1117/12.558412
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Conjugated organic molecules and polymers are of great interest for applications as the active element in new types of electroluminescent, photovoltaic, and electronic devices. Control of the molecular order of these materials can have a significant impact on their optical and electronic properties. In particular, alignment of conjugated organics that exhibit an intrinsic anisotropy in a dipole moment permits generation of thin films that emit linearly polarized light in an orientation specific to the alignment direction of the molecule. Polarized photoluminescence and electroluminescence from ordered conjugated oligomers and polymers has been demonstrated using many alignment methods, but particular success in integrating these materials into electrical devices has been achieved by utilizing conjugated materials that exhibit a glassy nematic liquid-crystalline phase. We report the status of our ongoing development of OLED devices based on glassy nematic oligofluorenes. These devices exhibit electroluminescent peak polarization ratios as high as 31:1 and color coordinates spanning the entire visible spectrum.

Citation Download Citation

Andrew C. A. Chen, Sean W. Culligan, Yanhou Geng, Shaw H. Chen, Kevin P. Klubek, Kathleen M. Vaeth, and Ching W. Tang "Glassy nematic conjugated oligomers: materials for organic light-emitting diodes", Proc. SPIE 5518, Liquid Crystals VIII, (15 October 2004); https://doi.org/10.1117/12.558412

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