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Organic Polarized Light‐Emitting Diodes via Förster Energy Transfer Using Monodisperse Conjugated Oligomers
Author(s) -
Chen A. C. A.,
Culligan S. W.,
Geng Y.,
Chen S. H.,
Klubek K. P.,
Vaeth K. M.,
Tang C. W.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200306265
Subject(s) - materials science , dispersity , conjugated system , polarization (electrochemistry) , oled , energy transfer , optoelectronics , diode , photochemistry , light emitting diode , circular polarization , luminance , optics , polymer , nanotechnology , polymer chemistry , chemical physics , chemistry , microstrip , composite material , physics , layer (electronics)
A heptafluorene lightly doped with monodisperse conjugated oligomers is used for the first demonstration of organic polarized (see Figure) light‐emitting diodes utilizing Förster energy transfer. Emission of blue‐green, green, red, and white light is accomplished with a turn‐on voltage of < 4 V, peak polarization ratios of up to 26, integrated polarization ratios of up to 19, and luminance yields of up to 6.4 cd A –1 .