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P‐99: Polyaniline as Hole Injection Layer for OLEDs and PLEDs
Author(s) -
Werner B.,
Posdorfer J.,
Weßling B.,
Becker H.,
Heun S.,
Vestweber H.,
Hassenkam T.
Publication year - 2002
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1830413
Subject(s) - polyaniline , oled , materials science , layer (electronics) , conductivity , particle (ecology) , luminescence , optoelectronics , chemical engineering , nanotechnology , composite material , polymer , chemistry , polymerization , oceanography , geology , engineering
Although polyaniline (PAni) has been proposed for use as a hole injection layer (HIL) in OLEDs and PLEDs very early, there is obviously no broader use of it on a (pre)commercial scale. Recent results will be presented showing that PAni can be efficiently used as HIL, and that it shows a more appropriate combination of properties, compared to the usually preferred PEDT. Commercially available water‐borne PAni dispersions show a particle size of about 35 nm, a lateral conductivity (when deposited and dried) of close to 10 −6 S/cm, and in the final devices luminescence performance data are at least comparable with PEDT, usually up to 30% more efficient.