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Proceedings Paper

Glassy nematic conjugated oligomers: materials for organic light-emitting diodes
Author(s): Andrew C. A. Chen; Sean W. Culligan; Yanhou Geng; Shaw H. Chen; Kevin P. Klubek; Kathleen M. Vaeth; Ching W. Tang
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Paper 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.

Paper Details

Date Published: 15 October 2004
PDF: 15 pages
Proc. SPIE 5518, Liquid Crystals VIII, (15 October 2004); doi: 10.1117/12.558412
Show Author Affiliations
Andrew C. A. Chen, Univ. of Rochester (United States)
Sean W. Culligan, Univ. of Rochester (United States)
Yanhou Geng, Univ. of Rochester (United States)
Shaw H. Chen, Univ. of Rochester (United States)
Kevin P. Klubek, Eastman Kodak Co. (United States)
Kathleen M. Vaeth, Eastman Kodak Co. (United States)
Ching W. Tang, Eastman Kodak Co. (United States)

Published in SPIE Proceedings Vol. 5518:
Liquid Crystals VIII
Iam-Choon Khoo, Editor(s)

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