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Efficient Electron Injection from a Bilayer Cathode Consisting of Aluminum and Alcohol‐/Water‐Soluble Conjugated Polymers
Author(s) -
Wu H.,
Huang F.,
Mo Y.,
Yang W.,
Wang D.,
Peng J.,
Cao Y.
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.200400067
Subject(s) - polyfluorene , materials science , bilayer , cathode , polymer , conjugated system , electroluminescence , diode , optoelectronics , layer (electronics) , chemical engineering , photochemistry , nanotechnology , composite material , membrane , chemistry , biochemistry , engineering
A bilayer cathode consisting of aminoalkyl‐substituted polyfluorene and Al layers (see Figure) effectively injects electrons into an electroluminescent polymer emitting layer. The alcohol‐ and water‐soluble polyfluorene, and its quaternized salt, can be used to fabricate polymer light‐emitting diodes with device performance comparable to, or exceeding, devices using Ba/Al cathodes.