Strongly Polarized and Efficient Blue Organic Light-Emitting Diodes Using Monodisperse Glassy Nematic Oligo(fluorene)s


  • The authors are grateful for the financial support provided by the Multidisciplinary University Research Initiative, administered by the Army Research Office, under DAAD19-01-1-0676, the National Science Foundation under Grant CTS-0204827, Eastman Kodak Company, and the New York State Center for Electronic Imaging Systems. Additional funding was provided by the Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC03-92SF19460 with the Laboratory for Laser Energetics and the New York State Energy Research and Development Authority. The support of DOE does not constitute an endorsement by DOE of the views expressed in this article.


Monodisperse oligo(fluorene)s have been successfully employed for the construction of polarized blue organic light-emitting diodes. Uniaxial alignment is accomplished by spin-casting oligo(fluorene)s onto a rubbed alignment layer with subsequent thermal annealing. The resultant films yield the best set of performance data ever reported in terms of emission dichroic ratio, luminance yield, and chromaticity (see Figure).