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

Abstract

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).