O. Onitsuka et al., ENHANCEMENT OF LIGHT-EMITTING-DIODES BASED ON SELF-ASSEMBLED HETEROSTRUCTURES OF POLY(P-PHENYLENE VINYLENE), Journal of applied physics, 80(7), 1996, pp. 4067-4071
Thin film light emitting diodes based on multibilayer combinations of
the conjugated polymer poly(phenylene vinylene) (PPV) and different po
lyanions were fabricated via the use of a simple layer-by-layer molecu
lar-level processing scheme. Molecular-level manipulation of the type
and sequence of PPV bilayers used to construct the films was found to
produce devices with dramatically improved luminance levels and effici
encies. It was also found that device efficiency could be improved by
controlling the nature of the thin film/electrode interface. (C) 1996
American Institute of Physics.