Patterned Polarized Light Emission of Fluorene Derivative Based on Photoalignment

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Published 7 December 2009 Copyright (c) 2009 The Japan Society of Applied Physics
, , Citation Nobuhiro Kawatsuki et al 2009 Jpn. J. Appl. Phys. 48 120208 DOI 10.1143/JJAP.48.120208

1347-4065/48/12R/120208

Abstract

Patterned polarized blue-light emission was achieved using a new liquid-crystalline fluorene derivative (F1) on a patterned photoalignment layer. Adjusting the doses of linearly polarized (LP) UV light exposure onto the photoalignment layer controlled the alignment direction of F1, which coincided with the molecular reorientation direction of the photoalignment layer. An electroluminescent device with orthogonally patterned molecular orientation was fabricated, demonstrating patterned polarized blue-light emission with a polarization ratio between 2.7 and 3.5.

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10.1143/JJAP.48.120208